One hit in the nuts, and you'll know that a cup is ALWAYS a good thing to have.
Only if you like your nuts! I love mine and would protect them from anything!
There's an old saying - "I'd rather have it, and not need it than need it and not have it." Take heed when I say I've suffered a many a shot to the testicles, and I am now able to have children because of my cup. So yes. I'd definitely use one.