Not advice just a few thoughts.
There’s never been a better time to leave Aviation. If you’re not happy in the seat you’re in now you certainly won’t be happy there in 5 years.
People come back to Aviation after extended breaks regularly so although not easy if one is to find themselves with a burning desire to return in good times it is possible, on the other hand people leave the industry regularly to find that in-fact the grass can be greener on the other side.
Don’t underestimate the importance of time with family, friends and a predictable lifestyle. For me personally, once it did become a job, the importance moved from gaining experience/progression/finical gain to improving the quality of the job, sometimes they were the same thing sometimes they weren’t.
Personal circumstances will dictate how people handle the next few years, if you’re still in the bottom of GA ‘living the dream’ and you’re not in your early 20s it could be worthwhile walking away but, sitting in a single pilot TP in your 30’s might not be too bad, there’s no right or wrong answer to this, you may just have had a gut full of living in the locations available outside of the airlines and want to improve your lifestyle.
For those that are ‘hating it’, I wouldn’t hold on to hard as one poster mentioned above, the career does improve but not that much.