My situation is very similar, I'm on green card here as well. The only difference is that I actually have valid Russian passport, so can go back there whenever I want.

After careful consideration of my personal situation I have decided to pass on citizenship. At least for now. There are just too few benefits. I don't think I'll get deported, I don't care about voting (electoral college would make my vote in presidential elections a lot less relevant in my state), I don't want to do jury duty, I don't want to pay exit tax should I decide to leave the country.

When they decide to rip me off with taxes (and I already paid millions), I'll just say "thanks, but no thanks" and move to HK or Singapore. :)