I want to add a positive note about Etsy. I have been selling my paintings there for 6 years and have had a lot of success. It has a huge market, worldwide, and that means two things: you can get lost amongst all the clutter--vintage, prints, cheap art---etc and/or you have a very large audience to showcase your work.
The key to Etsy is time. You do have to put a lot of time and effort into building a great shop, photographing your art, socializing, reading the forums, re-listing items, and getting involved. You also have to use FB, DPW, and Pinterest and IG to point people to your shop. If that is something you want to do, it can be a big success. If not, then you do get lost in the crowd. It is a slow process in the beginning. I sell mainly 8x10 pieces or 12x12. BUT, they also act as advertising, so I get many many commissions from people who see my shop and want something larger.
It has changed over the years, and I do not sell solely on Etsy, but so many clients have an account there, that it is an easy venue to showcase my work. I don't put as much effort into it now, but I still get 200 views a day, and that is all a positive for me.