Why leave it out? Well, one of our friends here is a doctor. She might not want that on her profile because it could attract Gold Diggers. Others could have had very successful careers but be briefly between employment. Still others might be stay at home moms looking for a baby daddy or sugar daddy. Who knows?
I see your point about wanting to know but keep in mind - it might not be as it seems.
Income level - I never listed mine. I wanted to find someone with similar income. I was not looking for someone to support me but I wasn't looking to support them either. Or someone in lots of debt. I was looking for an equal partner but preferred to find that out on my own.
