I thought the whole point is because they had no power or ambition, they were much less likely to be corrupted by the ring.

Well yes, we could send Glorfindel who has already fought a Balrog before. But, hear me out, what about this pudgy gardener instead?

Elrond: At least there are fewer this time.

Well have you ever recruited anybody other than weirdos for an adventure? Yeah those were totally normal, well adjusted people that wanted to do an overnight building a log cabin on the side of a ski resort to smoke weed in during the winter.

He should check out what Merlin did last time he overindulged, common wizard mistake

We’ve all been there, Gandalf.