People are invested in bitcoin in many ways.
They see good reasons to stick with it and most of them are thinking long term.
Things crash from time to time, it doesnt mean they are dead.
And besides that profit isn't the main focus for most of the old dogs of bitcoin.
Indeed, I agree with your statement that entering in the world of Bitcoin is a long term project of a person's life. They think about the future. Majority of us knew that BTC is the future currency.
In addition, people tend to be part of the Bitcoin community because they want to contribute to the development of technological society.
The life of every person involves in the society that thinking about the future is the kind of person which is effective, efficient, and productive.