I buy those that was popular in last boom in december to make profit if another wave comes, but for long term i am into ltc eth etc bnb.  we will see

The motivation is to retire myself 10years from now. I have scary periods like now after the last decembers boom, but I am still optimistic for long term.

Some interesting research on this subject from 'Katrina Kelly-Pitou'

"Electricity production can increase while still maintaining a minimal impact on the environment. Rather than focusing on how much energy Bitcoin uses, the discussion should center around who indeed is producing it – and where their power comes from." 

"did we ask this question before the internet grew globally? "

"Banks use up electricity an estimated 100 terawatts/y (branches, computing atms etc)"

"If Bitcoin technology were to mature by more than 100 times its current market size, it would still equal only 2 percent of all energy consumption."

I read dozens of comments found not so much people are into litecoin. I bet big on it. i think that "little-brother" effect will pull the price with btc when bulls wake up

When I first bought btc I watched only the numbers,and the math.last year at this time after the first Chinese crack it was near to 2k. the previous year around 600 . and the circulation suply: 21M makes me think about that day when we are going to reach it,  how it will affect the whole thing. and You can see a tendency in the price in the last 8 years and we see those months years that was bearish,but in the whole picture it is growing.  So after the numbers  I jumped into the world of encryption and read a lot about Satoshi's blockchain and I really think it is going to be something special to our civilisation.