Interesting thoughts. You could argue even though you were in the space at $10 and made millions you could have blown it all and now you are poor. Or even the case that you bought at $10 and sold at $100, would you be that rich? or you made a lot and reinvested recently and are currently 80-90% down on your portfolio. Many different scenarios can be played out. But overall, if you were smart enough to be in the space then, there's something about you.
Sure, you could have blown or lost it all, but if we are talking about people who were here at $10 and are still here we can assume they were and are still interested in this technology/investment. This means they probably still own some coins, and if they don't they are waiting for the bottom to buy more. There's really no point in sitting on a forum about something for 8 years and not getting involved. Like when you are participating in discussions about cars for 8 years straight, chances that you own a car already are pretty high, don't you think? Even if they waited for 5 years to buy they have to be doing pretty good for themselves. I bought in 2015 and you won't hear any complaints from me, even if this bear market drags on for another year.
I find it hard when people say "bitcoin is going....anything". "IS" is a fact and nobody knows what will happen. I feel your belief brother, but when do you sell? You say it will be worth more than $50k, so what price will you sell at? Greed takes control and before you know it you have missed the next ATH. Create a strategy and stick to it. Good luck!
To me "IS" means complete confidence. I'm not saying it because I want to make you invest, but I'm so sure of it that I'm willing to put my own money at stake. As for selling, the answer is never. I never sell, I exchange it for goods. I don't want fiat and I will hold until I find the need to spend my coins. Even if it went to $50k today I wouldn't sell. I'd take it as a sign of people finally beginning to see the value in it. Think of the market cap. Apple has recently lost value comparable to the total value of Bitcoin and is still worth 6 times more, and this is comparing a single company to a decentralized, unconfistatable private money. I don't care about a temporary ATH and trading sucks IMO due to exchange fees. You can see your investment gain 5%, sell and not earn a penny.