You have to decide for yourself if a price of 52k per BTC is still a good place to enter. My personal opinion is that i will not buy BTC at that price levels because i just don't see BTC doing another x10 or more from this point on in the next few years. I think that other projects still have that potential. On the other hand if you buy BTC now and hodl it for a few years i am also pretty sure that you will have several opportunities in this few years to sell your BTC for a profit of at least 10% to maybe 100% and BTC is by far the safest investement that you can make in the crypto world. My altcoin portfolio was down more than 90% compared to it's ATH back in may and is still down more than 80% at this moment while the losses for BTC where pretty small.