To tie or not to tie?

Any other mommas contemplating getting their tubes tied when they give birth? For some reason everyone keeps suggesting I do so because I have a scheduled c-section (even though its none of their business what I do with mu body). Im only 27, this is my second, and while I realize 2 kids are plenty these days, I can't help but wonder if in a few years what if I want another? How do you know if you're done? I think I may want to leave myself the option.