Should I mine bitcoin?

Why do you ask? It's money from nothing, only electricity and the Internet need to pay

It's not affordable, I looked at doing it a year or 2 ago, it uses more electricity / power than you get back from the bitcoins.

-Profit

i don't think you can make any profit from mining btc, but you can mine alt-coin (eth,dash etc)...i mining using my 1050ti for testing making 60~70cent/24 hour. but i ain't running it 24x7....i just mining when i ain't doing any work.

No its not worth it with only one PC and its also a waste of time.

Id rather mine some Etherium since it isnt as big like Bitcoin. Also Litecoin would be a great choice

Try searching for a better pool my friend, there are many other better currencies to farm than bitcoin

I will do some research, got some (not so) old graphic cards and pc's here. Will try to set up something on sunday..

to make some money with gpu mine Zcash or Ethereum, bitcoin only worth if you have a big farm of ASIC's miner

Nah, BTC mining isn't profitable anymore, even with extremely efficient power usage. Ethereum is more profitable, but I don't even think that's worth it anymore.

i guess you can. idk if its illegal though because if you think about it normally 1 bitcoin is very expensive but i guess you can do it for free like this