Subject: How come we choose mates visually?

Most mammals mate, seek food and raise young with the sense of scent. We 
use primarily our vision and our brains to do these things, a lot like 
birds. What is the evolutionary journey that led us to this pecurliarity? 
When, say, a cat chooses a mate, it does so by scent. What causes it to 
make this decision between all the possible suitors? Why don't we do it?

Re: How come we choose mates visually?