^ Yep, funny you mention that - my gf has a big ass, she's beautifully curvy but my cock doesn't seem to get much depth. But one thing I'll say to ease your fears is this: women aren't all thinking that because you're not giving them the same sensations as a hung ex that you're bad in bed, or less manly or virile.
Some might be disappointed but most will never say, so there's no point torturing yourself. I think of it like this: I'd much prefer a tight pussy, I get much more intense orgasms from them, and those orgasms left me far more satisfied than the ones I have with my current gf, who I often struggle to feel. But would I trade my gf in for any other woman with a tight pussy? Never! In fact, once I'd accepted that I wasn't going to get those thrilling, intense orgasms with her, it didn't bother me at all.
I reckon the vast majority of women - if they like you even just a bit - will make the same allowances.
That's a good point. In fact, it's probably good that I have a smaller dick because I prefer anal.