The goal to catch-em-all, contests, competitive battling, EVs/IVs, safaris, breeding, these facilities, mega-evolution...well, welcome to the world of pokemon! Hahaha.
Don't worry, just enjoy it as you do right now. It all sinks in over time. Some of us probably are just YEARS ahead of you, hence why you see it that way - but you shouldn't, really.
That's a pretty nostalgic team you have btw. My first team (Yellow) had Haunter (that also played an important role in the team) and Pidgeot, while my first silver team had Umbreon in it. The Elite Four definitely were tough during those times as well and I'm sure we've all been through it. I got swooped by the 8th gym leader, Claire, many times...since typhlosion was my strongest and was not good against her Dragons, moreso Kingdra. I also lost once or twice to Lance in the same Silver run, due to the surprise of THREE dragonites and an aerodactyl to boot, which once again, my Typhlosion was weak against. I'm pretty sure it was lv62 or 63 when i finally beat the game...lol. I could even remember training a Rhyhorn to a Rhydon (caught in Victory Road..to Horn Drill/OHKO a Dragonite or two) as well on that run, and using lots of revives (literally waited until dragonites' PP and HP, from confusion, got depleted), to finally get through.
These moments are among the best memories of pokemon we could probably keep. So you're doing just fine. lol.