I need some help here,

I am not circumcised and having sex with a much older woman. I am not getting much feeling from her. She is turned on wet, except I slide in her with out pulling the skin back. If I pull it back the inside of her pulls it back over the head. I loose feeling. I rode her for almost two hours and feel nothing at all. She tells me I am the best sex of her life, yet I am not enjoying the sex inside her. She gives me oral sex with the skin back, that feel strange but good. She has no problems giving me oral sex, just wants me pumping her for a long time before. I can get my hand inside her with out a problem.
Is she just so big I am wasting my time?? She said I can back door her as well. I tried and her ass is not tight at all. She just get excited and has her orgasm in either hole.
I thought of pulling the skin back and putting on a condom. She hates condoms. Said she gets dry from them.
I think I need to find an older woman who is not so loose, or have my sin cut back.