My two years old fig tree (12 ft tall) seemed to be a Caprifig. Can anyone give me an idea? if so, what should I do? Cut it because it is useless? Or it might be just this year. thanks.

There is the possibility of grafting. Or cutting it off at the trunk, and letting it reflush with new growth, and then graft 3-4 thing on the best shoots next spring.

You have the roots that will force lost of new growth, so you should not waste them, if possible.

Hello Turbo,
how did you end up with a respectable caprifig (12')in your hands? Its fruit sample, the one smashed shown on the picture looks like to have recently produced wasps !? If this is true you have the correct tool and the ideal environment to play with Zidi's, Bursa, Sarilop etc..(GREAT FIGS !)

I agree, Jon is giving you good advice. In fact this tree if healthy makes one of the the best root stocks, capable of taking no matter what other fig scion.

On my perspective you are a lucky man and I feel that some members (not many unffortunately) would love to be in your shoes. You should not scrap that tree.
Good luck and take care
Francisco

I agree with Jon too!  For my birthday, my husband got me this grafting tool, which I hope makes grafting easy!  I have stayed away from caprifigs because I feared we are not in wasp country (we have an abundance of the kind nobody wants), but the fig wasp, although it is in California, I'm not sure it lives specifically where I do.

I plan to practice grafting both on grapevine root stock, and on figs, olives, avocados and citrus.  Would love to have different varieties on 10 in-ground fig trees, and the same with the other fruit trees.  The vineyard gets most of the space, of course.

You are very lucky to have a large tree on which to graft the fig varieties of your dreams!
Suzi

Thanks to everyone's reply. I want to add a little more descriptions about my fig trees.
I am in San Jose, California. the trees were coming from nowhere. I guess was bird. Originally they were four trunks (maybe four trees) growing up together and I had pretty good harvest. then when trees were tall, I decided to cut two trunks that near the fence. from that time, my two remaining trees produce caprifig. that is the whole story. 
Any ideas? thanks in advance. 

Hi turbo,
That tree is not useless . But it doesn't produce edibles.
That tree is still young, so unless you want to play with a caprifig - and you might have some already around your house - so why keep one more ?
If you're sure that it is a caprifig, I would remove and destroy that tree.
I would than plant a productive strain.
The reason for that is that than every root-shoot could be used and traded or gifted ... If you graft ... every root-shoot will have to be grafted to produce edibles.
The choice is yours !