Originally Posted by koland
In a way, you are - if someone you've joined resets, you lose an ally, so must purchase that one again (at my level, the last one cost 17 BILLION dollars).
If you choose "wisely" (if such a thing is possible), you get allies that give you back useful gifts, instead of ignoring you or giving you useless gifts (or gift bombs).
Well sometimes you have to get rid of those population gifts. I haven't found a way to trash those.