I started in gen 3, so having no transfer capabilities is normal to me. Getting the option in gen 4 was exciting, but I didn't have any cartridge gen 3 games to use for it for a long time. I transferred a decent amount from gen 4 to gen 5, but some transfers I've since regretted (I miss Palkia and the lake guardians in my old Pearl save file).
Somehow, even after all these years, having transfer still feels like something "extra" and not that important or integral. Granted, I'm that kind of sentimental where I won't ever transfer things like my in-game team because I feel they belong in their original game, so I only transferred legendaries, and bred babies from my favourite individual Pokémon to take to the next game.