I have a little bit of BTC left - I mined several years ago when it was still feasible to make money mining on a desktop PC with a good video card as part of a mining pool. I've sold off most of it, I have a little bit left that I'm not especially motivated to sell.
I don't see putting money (as cash, or mining) in cryptocurrency as investing, but as speculating. See http://www.thesimpledollar.com/the-intelligent-investor-inve... for a classic discussion on the difference. I don't distinguish to be pedantic, but because the word "invest" is often used to mis-characterize spending or gambling in an unreasonably positive context.
Its possible at the moment to profitably GPU mine altcoins at pools that payout in BTC, but not very. A midrange GPU like a 1060 or 480 might net you $2/day after electricity costs, and that is strongly dependent on the recent rise in BTC price.
Its nothing like years back when a $150 GPU could net you $5-10/day in BTC, directly. Of course that period didn't last long -- I dont think even this mildly-profitable altcoin-mining period will last too long either.
I don't see putting money (as cash, or mining) in cryptocurrency as investing, but as speculating. See http://www.thesimpledollar.com/the-intelligent-investor-inve... for a classic discussion on the difference. I don't distinguish to be pedantic, but because the word "invest" is often used to mis-characterize spending or gambling in an unreasonably positive context.