I don't know about the others, but people around me mostly hodl all their btc and they didn't sell during bear market. All this patience is finally paying off. I always planned that once btc reaches 20k that i will sell at least half, but now i am not so sure since end of 2021 might be like end of 2017 and then even $100,009 is possible.
So in the end i will probably just go on with hodl.
Where's the substance in this claim that it is possible for the market price of Bitcoin to reach $100k? You have already said it; you're not sure we'll, we are all.
But if your friends held their investment for three years, that's something hard to do so and I congratulate them from doing so I'm sure many people failed to do so because of different life circumstances and not everyone can afford not having profit from their investment for 3 years.
But the bigger question is, if you hodled all this while, are you going to act like a scared bunny, and take your money out when it reaches $20,000 again in a week or two?

That would be a weak decision. If you hold that long to wait for the next bullrun, you would rather be waiting for longer years again to wait until you wanna retire surrounded by a pile of money. You are not going ot be scared now than what had happened last 2018 where the price plunged.
If you dumped now, you just wasted the long wait you have invested. You got to make it worth the stressful time you felt during the bear market and wait til it doubles like $40K.
Easy to say.
Fear is expected. Those people who held for three years might just be wanting to get their money without loss and if things get complicated, they would more likely secure at the previous ATH price point since correction could again occur, which no one is certain of.