It depends what makes playing "worth it" for you. If you are saying that you may not play because you don't think you'll like EoC, then watch vids or play the beta, and if you don't like it you can quit when it comes. But, RS to most is about fun, right? If maxing is fun to you... do it.
Edit: Also, I don't think training in EoC will be that much slower (maybe it can be even faster) than the present if you are botting. Bots will not die after EoC, and I'm sure there will be a rush from scripters to make fitting scripts when it arrives. Of course, afking legit the rates would be bad.