I don't think it is for the snob value anymore, if there were ever such a thing. I think you would be very hard pressed to find a job without a degree in fields such as law and medicine (both of which it is a requirement), architecture, engineering etc
You were probably looked down upon because you couldn't spell the first word of their qualification and with regards to doing a degree during employment? I guess it could be possible if you were SH, but I know I wouldn't be effed to get out a textbook whilst I am jetlagged during stopover and study. Also, whilst you may be earning three times more than a B Arts, there are many degrees that offer avenues to careers that make our salaries laughable (given what we also have to go through as well + medical + checks)
I think it is quite clear that you under-appreciate the value of university.