The real reason people are interested in bitcoin now may be a lot simpler, because everybody else is interested. The only reason you buy bitcoin is because you think it is also valued by other people.
if you are interested in buying Bitcoin because of someone else (relative, friend, parent, idol, or girlfriend) then you will forever not understand
"for what reason did you buy Bitcoin". The worst thing that might happen when you get trapped at high prices is that you blame them for making you buy Bitcoin with your funds.
the wisest rule of buying Bitcoin is only one:
"don't buy Bitcoin because of someone else or FOMO", buy Bitcoin because you are aware and believe that Bitcoin will give you profit in the future (10, 20, or 30 years in the future).