"Bitcoin is useless"
Then go somewhere else... ?
Why?
Look up at the name of the website you are using:
bitcointalk.org
If you have no use for bitcoins, then maybe you should ask yourself why you are here on a bitcoin site? Trolling perhaps?
Could you go into a bit more detail what you were spending hours on that gave you such a low return? Then you should ask yourself what you did to get any dollars you have? Maybe you could do the same thing in exchange for some bitcoins?
People Investing in Bitcoin is none of your business! If you loss or even have a problem with BITCOIN as you mention on your treed is not our problem, if you are disgusted on crypto currency project then can sell out your coins and invest to something fruitful for you. But you can not control people investing on Bitcoin project which none of your issue. For what ever reason the people may have that's their own decision not yours. good luck.