6BTC investment into mining, worth it ?

[Operatr]

Bitcoin is worth far more than mining gear, you will never make it back paying retail prices for the miners, even with free electricity/rack space.

I would say just hold on to your coins. If you really want to mine, just get a single small one.

As a hobby: go for it. That is all mining is now is an expensive hobby for anyone lacking a million dollar bankroll.

As a profit venture: good luck, impossible without buying at manufacturing cost for the ASICs, and having a high power datacenter to house them.

[ShakyhandsBTCer]

Bitcoin is worth far more than mining gear, you will never make it back paying retail prices for the miners, even with free electricity/rack space.

In theory you would eventually ROI if you did not have these operating costs as you could simply leave your miners on almost "forever"

[BTC_Fundamentals]

Interesting to know what will be the value of BTC and when will it jumps big time.

[xstr8guy]

Interesting to know what will be the value of BTC and when will it jumps big time.

Nevermind that it can "falls" big time too. 

[allcoinminer]

Bitcoin mining was for hobbies earlier and now its purely for experts unless one ease to loose money in mining hobby.
If you are an expert you can ROI from mining hardware. You need a lot of thinking, you need to baby sit a lot.
After all if the exchange rate plummets, all the efforts will go to worthless and money you invested will shrink.
It all means, if you know and have time buy hardware else hold on to btc and sell after a lot of difficulty jumps, you will earn a nice income.