I was mining bitcoin back in 2011 but lost my wallet/gave up etc etc...
Is it still worthwhile getting back into crypto?
If you mean getting back into mining -- may be worth it, but will depend on your electricity price and require a lot of commitment.
If mean getting back into crypto in general -- it's always worthwhile to get back into crypto. Just watch out for scammy ICOs, useless alts and other questionable investments.