Wise choice. because it's like that, there are mostly reasons that say that it's not in bitcoin because the price has gone too far and will only make a little profit now. there are many who say that and this is just a classic excuse made because as you said it is never too late and no matter how big or small when they really intend to be here of course they will.
When you are aiming on more 2x or more kind of profits then bitcoin wouldnt really be a good choice imho and lets just face that fact even though it is somewhat could give out that assurance
that it could last for long term even though its no guaranteed but seeing the support and recognition then it would surely last for a while and thats why some people do prefer altcoin investment
rather than sticking with bitcoin even if they do know that this is something much better than with alts.Well, this is a personal choice because we do have different mindset
or goals have in mind whether we do go into something riskier like alts or go to the common side which is on bitcoin.
as you said this is a personal choice of each and everyone is free to choose.
indeed alt is more profitable and I don't deny that but it can't be separated from the big risk. on the other hand bitcoin also can't provide large amounts of profit but with alt they are actually safer I think.
apart from alt and bitcoin, actually both of them are still very good, it's just a matter of making up your mind whether you are sure of the choice or not