value of "charity" package ownership?

For a while now, I've been adopting packages that I'm not actually
interested in, and in some cases don't really even understand, just because
I have the time to help out and want to be a nice guy. I'm having second
thoughts about the wisdom of this. Should I orphan these packages, on the
off-chance that somebody more appropriate wants to own them? Is a mediocre
maintainer better than no maintainer?