It's important that I mesh with someone, have the same sexual expectations. Sex can be very important for both partners, but one may be satisfied with sex once a month and the other every day. Important to both, but not actually that compatible.

It depends on the people and their relationship.

Somewhat.
I'm demisexual, so sexual chemistry was never behind a relationship, but an excuse to hang with a jolly male "pal," since that's the only socially acceptable reason for opposite genders to live, and do things together.

What does "chemically attracted" mean? I understand the concept of attraction that is more than a respect for each other but the implication that there is some exchange of an addicting chemical doesn't ring the bell with me. That really does seem to say that the right after shave will win the ladies.

Very important..

It's important to me...maybe not in ten or twenty years.

Is the only chemistry I need validation and upkeep. Only table I apply to. In my "town" is the only game that can't be bought or fake. I don't need to be a genius to see thru it and a genius can't have it or figure it out. Animal Attraction!!!

At first - very important. After you are committed to each other - it's great if it stays, and effort should be made to maintain that - but feelings evolving into a different kind of love doesn't necessarily mean a deal breaker.