Some guys would. Some guys would seek out a woman with breasts of a certain size or shape. Some would seek out a woman with amazing fellating skill, or feet with very high arches, or a round ass. Nature has hard wired humans to have sexual desire in order to continue the species. Being aroused is critical to this. Being happy and secure is a secondary requirement for the ability to get aroused. How each of us are aroused is highly individualized.
This site is about penises. It will naturally attract people who have a lot of energy around this one bit of anatomy, for reasons that will be in common, and reasons that may be far removed from anyone else's. Those of us here should not be confused with the mainstream, as I doubt we're "the norm".
There are a lot of guys for whom penis size is very important in their lives, and this site will attract them. The fact that there might be a dozen women here, or two, or fifty, who aren't into big penises as a fetish or strong desire doesn't discount the dozen, or two, or fifty, for whom it is important or critical. They don't speak for all women, or all men, any more than guys who claim women all want big cocks speak for all women. None of us can speak for all of us, or all of our sex. So while there will be guys for whom vaginal tightness is critical, there will also be women for whom a large penis is critical. It doesn't make them wrong or shallow.
Just one opinion, obviously....