Bull market happening. Why you not bought btc when it was 3k? 10k? 20k? Why people so like to buy on ATHs?
People who doesn't know bitcoin are mostly getting interested in bitcoin due to it's price hike/pump or when bitcoin is in a bullish market just like on 2017 where tons of investors begun investing on bitcoin and other crypto.
Maybe perhaps the OP is new on crypto and wanted to invest on bitcoin when the price correction happens which haven't happened yet and continue raising to 31K USD. Most of us here didn't expect this continuous growth on bitcoin and expected that the correction will happen sooner.
Anyways, OP can still risk investing on bitcoin but must carefully watch the market as the correction might happen anytime soon or maybe it will continue growing for long. No one really knows when the correction will happen or at what point it will happen. If we're lucky we may be seeing bitcoin in the 50k USD range before the correction even happens.