Yes! BTC disappointed me very well because i invested in coin and then BTC got dip and i took a good loss and still stuck in loss. I am waiting for BTC up and then I will sell my Coin.
You will only get disappointed if you really don't understand or try to understand the market and what is happening in our world nowadays.
A bad experience is always disappointing unless you look at it as a new and rewarding experience.
People will get disappointed if they only care about the profits and they still thinking that in crypto they can earn fast with a high profit which is actually a lie,
The disappointment stems from a misunderstanding of the processes prevailing in the crypto market (basically, you already said that) and incorrect expectations from bitcoin. You correctly said that people are hungry for a fast get-rich-quick with bitcoin. This is due to the fact that it is during a rapid price increase that most beginners invest in it. At that moment they see dizzying growth and it seems to them that this will continue indefinitely. One should not expect the impossible from bitcoin, otherwise the harsh reality will very painfully "return to earth". In general, I want to say a banality that before investing in bitcoin, you should understand its essence and capabilities, which you can count on in order to avoid false expectations and subsequent disappointment.
it is not always rainbows in crypto.
But it seems to me the opposite. Until today, from the very birth of bitcoin,
"it is always rainbows in crypto". Even after so many years, the user base and the price of bitcoin is only growing. Temporary "clouds" can be neglected.