It must depend on how much you value your time.
If I could put new petrol in it, clean the plug and points and then flog it to some mug hopeful buyer on Ebay, I would, but given that they were horrible things when new, what's the point of investing any more time in it than that?
Is anyone ever going to wake up on a summer's morning and think..."I'm going for a blast on the Tomos"?