I have been reading a lot on the internet then find this forum.
I'm going straight with my questions :
How big has to be the invest and how long will take to start some profit out of it ? Millions of dollars (only mining farms literally producing their own ASIC's at this point have any real chance at profitability)
If that's not possible at the moment , there's people minning for fun ? There sure are. Most of your hobbyist miners (myself included) are making virtually nothing at this point relative to the investment they made in their hardware. (<--this will eventually plateu as we reach hardware limitations on ASIC tech)
Does people that mine lose $ ? Absolutely, these are the highly speculative types that are expecting bitcoin to reach and shatter it's previous all time high's of ~$1200/BTC
Anyhelp would be appreciated.
Will be looking foward.
Summary: Without free electricity it's highly likely that whatever you purchase through a manufacturer will even come close to ROI'ing at this point. With free electric and a bulk hardware purchase that results in some serious discounts there's a slim chance you'll get close (but doubtful)