Is bitcoin worth it?

For those who bought many Bitcoin in 2009 now have a hefty profit, if you do not live in China (where electricity is cheaper than in any other country) it's not worth mining it.
Maybe you should mine Etherium, Litecoin or Ripple instead of Bitcoin (but these currencies are very risky, due to the high fluctuation of the market).

Generally, cryptocurrencies are very risky so if you want to mine/trade with some you need to be very careful.