Investing worth it?

Bitcoin is a really good investment considering there can be only 21 million bitcoins and 17.8 million are already in circulation out of which 3-4 million coins are lost forever and the remaining 3.2 million bitcoins will be mined in next 100 years due to it's controlled supply.
https://en.bitcoin.it/wiki/Controlled_supply


So bitcoin's current block reward which is 12.5 bitcoin will be decreased to 6.25 next year in may. Making it more scarce and valuable.

If you aren't into day trading etc, you are safe and should hold bitcoin for longterm as the new age gold.