We can't really tell you to come back or not, that's for you to decide! But as Samantha mentioned, it's nice to see old players return.
If you do want to return, then you should. If you don't want to return, then don't.
Do whatever makes you feel best! If you think coming back can fill in the free time you have, you totally should come back! What gamemode are you planning on joining back to if you would join back?