The reason that I am getting into it is because I saw an article about the price of bitcoin - as I'm sure many newbies did.
I remembered that I had a small amount of bitcoin in a coinbase account that I created about a year and half ago.  I logged in and saw that my balance was about 6 times the original amount.

I recently quit my job and am looking for some passive income.  This will not be my only income - just supplemental.
The money I'm putting into my rigs is all from two real estate sales profits from earlier this year.

I'm going to build 6 rigs.  I'm considering selling 2 or 3 of them to reduce my cash invested and mine various coins and let them just accumulate. 

I don't believe it's too late to start.  There are over 700 currencies, so there is opportunity.

I do wish I had started back when you did, but circumstance back then wouldn't allow the investment.

Congrats to you on your success.