One good decision of converting your alts back to BTC. If you are depending your whole life with altcoins and you don't hold bitcoin, you need to re-decide and start getting some bitcoin while they are considered cheap if you're living with the 2017's craze. But if you hold a great amount of BTC and you have alts to hold, it's still a good portfolio afterall, don't let it pass that you don't have bitcoin on your stash.
Why are people losing so much trust in altcoins ? This wants to make me believe what one of this forum users wrote that, Bitcoin will only be the cryptocurrency standing in 10 years to come.
We all need to really be keeping our savings in Bitcoin now and it is still not too late to do so like you said, now that bitcoin is still cheap to accumulate, not too cheap though but still better than the time people but in the past which was between $10k and $20k, I will even advise those people that bought bitcoin at that high price to still buy now if they are wise, because it is very certain for bitcoin to reach that last year ATH again, and whatever they invest now must have surely covered up for all the waiting.