Li Shenron
Legend
I love them too, after all my favourite RPG is named after them (and yes I also love dungeons)!I love dragons. They are far and away my favorite Big Bad in D&D. I am partial to city-buster sized great wyrms whose coming was foretold and whose wrath changes the course of the river of time. I don't use little dragons very often as I feel like it cheapens them, but sometimes smaller and young dragons show up as scions and servants of the Great Beast of the Earth. I usually leave the D&D color assumptions in place, but will sometimes alter or ignore them. I once rana campaign where dragons got their color from the environment their eggs were hatched in, and another time I had dragons change color as they aged.
I don't use good dragons very often and when I do it is usually as a patron of the party in the fight against the BBED.
How do you like your dragons in D&D?
I like dragons to be really powerful, but since I rarely reach very high level in the game, I also use their younger versions (except wyrmlings because they are really too low level), however I do not particularly emphasize their young age. Probably if it comes up I would rather narrate "wyrmlings" as young adults, "young" as mature adults, "adults" as elders, and "ancients" as, well, ancients (they're already there). Generally speaking I never feature under-age monsters in any case.
I like dragons to be complex, even if it means more challenging to run properly. I miss spellcasting dragons, and I will add at least some spellcasting on top of most dragons in the game, either using the Innate Spellcaster "variant" in the MM, or just customizing them.
I like dragons to be unique. I am not against color-coded dragons, even though sometimes I wish for each dragon to be its own color, as in "Ashardalon, the red dragon", but this would work a bit against my other wish to have a good number of them in the adventures. But with various customizations (adding spells, feats, class abilities, other monsters abilities, appearance tweaks...) I can achieve enough variety and distinctiveness in each.
That's it in a nutshell for me: powerful, complex and unique dragons!