[Coder-san]

Learning new things can be VERY addictive. You may generate interest in 20+ things in a short amount of time and exposure.
But is it worth it? Mastering a single thing takes years. Add to that the bogus philosophy of being in a society, having a family, earning money to buy food, etc.

I being a jack of all trades and a master at none, have lived my life following the first option. Was it worth it? Probably. Will this all-around knowledge help me economically/socially? No.
The final question being "Would you, if given a chance, focus on few things and try to master them or learn a ton of things and become a royal mess once more?"