I mean if you're making enough money with your new "job" then there's nothing to really sway you to go back to whatever you had before. I personally prefer to have a lot of contacts and networking that I can use should it ever be necessary, but then again I'm in an industry where having those contacts really are the difference between having a successful career or floundering for a long period of time before. If it was a dead-end job or a poor industry in general, there's nothing wrong with moving onto something with more prospects, provided you can pay for your needs.