I take the floor in particular, in a book that I read called "The little book that still beats the market" they emphasize that to choose the best investment option, a study and possible scenario must be done in 5 to 10 years, the most difficult to determine is which action will be safe and which will not, in this case it is fully applicable to the crypto market because Bitcoin is a safe investment, whether it goes down or not, it is the king currency and the one that will always guarantee profits after the Time, the other cryptocurrencies will follow their path, but the safest of all is BTC, in my personal opinion, it can diversify a bit with ETH which is considered the 2nd best currency.