Any time is good but buying during peaks still is not a wise thing to do. Why should someone buy Bitcoin at 100K when there will definitely be a much better possibility? Anyways, it's not a bad idea but it's not the best idea too. At the moment it costs 86K and I think it's a very good time to buy it. We already tested its potential, which is 109K. Bull cycle has just started, so I'm sure we are guaranteed to see it going up to 100K and even further, probably up to 150K or 190K.
As long as we can afford to buy at that price why not? when talking about the long term I think we can be wrong with the assumption that the price is now too high and reflecting on past experiences of course we realize that sometimes saying bitcoin is too expensive to buy it is actually slapped with the fact that in the end bitcoin exceeds expectations and the price continues to rise over time so seeing that of course now saying $100k is high enough can be the same nonsense as a few years ago where discussions like this continue to repeat themselves.
As long as we are able to buy at that price why not because in the end it also has pretty good prospects for the future provided we invest for a long time (because indeed investing in bitcoin is not suitable for short periods of time like trading that some people always do).
Waiting and buying at low prices is also very good but can we guarantee that the low price we set will be obtained? sometimes waiting like this becomes uncertain so as long as you can afford to buy bitcoin regardless of the current price with the intention of investing for the long term then it can be very good to do.