Answer:
1: As a most common answer. Jobs are affiliated with wealth and at least something in your bank account. And some of the most well known artists were broke and hungry as they started.
2: People see abstract art as a bunch of shapes or poorly drawn animals or objects. Being that it has never gained much respect people look over it much more than they should. The public also thinks that art has no real place in their lives despite it being in most parents hourly schedule, having to watch their toddler or small child watch the television. But truly astounding art pieces we've all seen are not always appreciated as a beautiful masterpiece, but a weird person with a ferret or a girl that "looks to yellow to be realistic". Overall art itself takes quite the mind to understand meaning and have meaning. In conclusion people who can't understand the art of Music, paintings or even theatre frown upon the subject of which they can not understand.
I hope this is detailed enough :)
