I have a small curvature in my penis to the left, it is 6.5 inches, perfect erections? is this normal? pros? cons?

Probably normal: Probably normal for you or a very mild case of peyronie's disease, which is scarring of the penile shaft from trauma. No treatment is needed in mild cases.

Should be no problem: Interesting that almost all penises with sideways curve, curve to the left. Usually no problem and should be ok for sex. Unlikely to be peyronie's disease because that usually results in upward curve plus a palpable plaque along top of penis (almost lie a bone). Pros are that it no doubt functions normally for sex & urination. Cons are that you may be self-conscious about the curvature. Is fixable.