Hi there,

This might be asked a lot but here it goes.

I have some spare cash and being tech savvy I want to build my own  +- 150 MH/s ETH mining rig.
Now based on current difficulties and price if they stay the same rig should pay itself back within 3-4 months.

My friends however are telling me that difficulty will increase and maybe even after a month or two my earnigns
could go -50% or could slowly deminish as time passes.

So is it worth it? Should i worry that my rig will quickly become useless? I see with BTC miners how fast technology progressed from gpu's to asics etc etc.