Did you forget the thread I made about this or the replies you made?

I suppose I should merge them. I'm still mining. There's been a scare recently because of something called "Segwit" which is planned to be implemented any time now. From what I heard it can improve the efficiency and life of bitcoins as a whole, but people were worried it would "fork" the coins by splitting their data in two and some could get lost in the process. Then again I'm going by a vague memory so I might be completely wrong about that. What's true for sure though is that people overthought all of this and a lot of investors backed out. Subsequently the value of the bitcoin (and other currencies) has decreased a little lately. But I think that will change come August.
The thing about bitcoin is that even if I'm only earning $2 a day from it right now, people often think of that as only the dollar. However, as the value of the bitcoin increases your amount of dollars you've earned over the course of mining will of course increase too unless you've already cashed it out. For the foreseeable future I do not think cryptocurrencies will "fade off". Their growth can sometimes be exponential and it's a great thing to invest in, so long as you don't invest more than you can afford to lose. Investing in beefy hardware is a mistake because people will begin to worry about market crashes and panic sell their graphics cards, etc. If it's merely an interest, invest in a recreational manner. Buy the coins directly. Or if you want to play flashy video games, get a card like a 1070 (mine) so you can both game and mine. No real regrets since even if somehow mining became a thing of the past, you still got the card for your primary reason of playing some sweet video games. Remember, avoid paying over the RRP for a card and check charts online to see which cards are mining better.
Right now I have a modest ~$130 in my desktop wallet. That's split between bitcoin, dash, and ether, the latter two being two other currencies. It's nearly an equal split but I have a little more ether. (That's going by current values, mind, so this might change.) I'll keep adding to this and splitting my currencies. Multiple currencies is the safer/smarter way to do it. I recommend this
Chrome tracker extension so you can actively monitor the value of coins. People see bitcoins and altcoins fall a little and usually from this write them off as a fad. But then they rise... and fall. It's how it works. If this scares you then I wouldn't recommend investing in many things anyway.