What is so special about a fig tree. Is it the tree of life?

The fig tree is used many times in the Bible from Genesis to Revelation. Why? What is so special about them that the Bible is not or is telling me? Is there any other kind of tree that is more used? Could the tree of life be a fig tree? I think this tree has two kinds of fruits: the obvious and a sweet seed. Jesus cursed the fig tree on the book of John because it didn't even have the sweet seed, right? I'm not asking about a specific doctrine. Just nuts n bolts about fig trees and spirituality.