(Sorry about the late reply)
I wasn't aware just how much you view the two as separate issues until now.
Not sure that i could convey to you my experience given that you view them in such manner. What i get from what you said is that basically, unless its something strictly related to the sexual act (from your perspective of what would be related), it won't affect your stimulation level. As in, unless you can see its translation into bed, into the act itself, it won't have any effect on your stimulation level.
Right?
If so, then we are polar opposites.
Basically, you think that sex with a person you love is better than someone random only because of other separate issues, rather than those issues affecting your sexual stimulation itself as well. This is what i understand. It could be an issue of interpretation i guess really. I feel that those things are actually inter-connected rather than separate.