The only reason why people buy bitcoin, is to make money.
Bitcoin IS money, so by buying Bitcoin you are in fact making money. 
The people who are still here since $10, etc are rich in the global term of the word rich. Maybe not in the western version of the word, but even then its still debatable.
If you were here since $10 you would be rich in all senses, global and Western alike.
Even now, at this low price, without any investing, you would have more than 1000 Bitcoins. How? Because of faucets and giveaways. Back at $10 there were faucets allowing you to claim 1BTC a day and the first signature campaigns in 2013 and 14 were paying 1BTC per month.
To me $0.30 BTC is an early adopter, for all we know the timeline could be 11 years and we are in the last year.
And IMO $1000 per BTC is an early adopter. Bitcoin is going to be worth more than 50k USD per coin. That's how I see it.
You can say that it's impossible, but people who saw MtGox collapse in 2013 and prices going from 1k to $300 also thought that doubling the ATH at 2,5k was impossible.