I have been recently thinking the opposite! I have just finished second year and really struggled due to mental health, my learning disability (amongst other reasons), and I still have extensions and resits going on. I had thought a few times about what I would do if I dropped out, and read/heard a lot of people saying they dropped out and although it may have been tough for the first few months, they are now much happier after finding a job or finding a different type of course related to what they were studying (ie. not uni) etc.
I was worried because I study biochemistry, and although I'm not sure what I want to do after I graduate, the things I potentially want to do would all be quite difficult to do without this degree, so it's nice to hear that there are lots who do actually go back too.