I'm a fan of both Pokemon and Digimon, but I like Digimon more than Pokemon. Let me try and counter your points with what little I know about the whole of the Digimon franchise (though my knowledge is best on the second anime season!)
reason 1 pokemons are more usefull:
digimon=what is the use of digimons? stop thinking cuz its just killing each other
pokemon= they are our friends- pets - co workers- life savers- vechiles - etc
Digimon, depending on the season/game, are an extension of a human's soul. A human and their Digimon partner can be exceptionally close that they feel the same pain, the same joy, the same sorrow. People with Digimon partners can grow from having their Digimon with them because the Digimon can show the human what they're missing in their lives, or how to improve their lives. This is exceptionally true in the first two seasons of the Digimon anime.
"Partners" is the picked common word in the Digimon fandom to describe the relationship between human and Digimon. Usually, in the Pokemon fandom, I just see the Pokemon described as possessions of the human characters.
reason 2 designs:
digimon= a bunch of ugly looking and terrifying robots and monsters and humans with armor and weapon
pokemon= such an original and unforgetable designes some ute ones(pichu - togepi - skitty - etc...) some scary ones (banette - sableye - haunter - darkrai - etc...) some cool ones (lucario - mewtwo - zoroark - etc...) some badass ones (luxray - charizard - tyranitar - hydreigon - etc...)
There's a wide variety of Digimon designs. The babies are squishy lumps, most of which are adorable. There are ghosts, dinosaurs, dogs, cats, humans, etc. You can't just look at the final stages of the Digimon and think that all designs are that way.
reason 3 there is something called "strategy":
digimon= oh you cant beat your enemy? digivolve! still cant beat your enemy? digivolve again! your enemy is so stronger? do the same thing! (yea and it goes on forever)
pokemon= pick your pokemon carefully by paying attention to types. level. attacks. evolutionary level. stats . etc... choose the best move to deal deadlyest possible blow. and more (and it never show you the same thing over and over again)
Evolution for Digimon, especially those with human partners, can come about because of life-threatening situations. Pokemon just evolve when they get strong enough.
reason 4 it is serious:
digimon= they are protecting world against "digital codes"!just a bunch of 0 and 1! something that even having a physical look is IMPOSSIBLE about it let alone throwing flames and weird powers or erasing or creating a UNIVERSE
pokemon= it is already real! a world ending storm - death of prince of seas - a never ending nightmare - the wrath of god - etc...
You do know that there was part of a season where a vampire Digimon took over an entire city and nearly killed everyone in the city. And actually did kill at least one human. And now, in the newest season that just came out in Japan, there was a massive loss of human life because Digimon were fighting in the real world. In the first movie, apartments full of innocent families were destroyed, the people inside burned to death.
Digimon actually deals with the "serious" side of having monsters around. While there is possible destruction with Pokemon, it has never dealt with people dying as a result of Pokemon being around.
reason 5 it IS "POSSIBLE":
digimon= just look up
pokemon= what is so hard about creating a genetically modified fighter with psychic powers (which is real) - creating an army robot which look like a bug and can throw signal beams?
It's been stated in Digimon canon that Digimon are creatures created from computer data. Any piece of computer data that gets put in the recycling bin, is put on the Internet, or anything like that becomes a part of the Digital World.
With Pokemon, it's more fake as, according to canon, the world was created by a space goat.
reason 6 they are always with you:
digimon= did you liked wizardmon/whamon/etc...? so sad this is the last episode you are going to see him/her.
pokemon= oh your darling butterfree died?(which never happens in front of player/watcher) wait why that sableye acts just like her? was it her ghost?
Digimon, except possibly those killed in the real world, are reborn. If the Digimon is partnered with a human, then the Digimon retains its memories and comes back to life in the same form as they were in before.
Pokemon just stay dead.
But yeah Digimon is a pretty bad show.
Not really. It's a show that deals with a lot of harsh realities of life. Divorce, the death of parents and siblings, adoption, family relations, how to handle being a child with the entire fate of the world resting on you, how to get along with people you just can't stand, etc. Digimon's characters all get development and keep that development. They don't reset their personalities at the beginning of every season. When a character is brought back for sequel seasons, they keep their basic personality and any development that they've had before.
You can say that Pokemon is better in your opinion, but don't do so by bashing Digimon with falsehoods about that franchise.