that is why I said to acclimate yourself gradually...

Dont try to go up the altitude too fast, do not ignore it when your body is giving you warnings. If the symptoms persist, seek medical treatment immediately.

I dont know about others, to me, taking unnecessary risks for something like travelling for fun, is being stupid. Sometimes people get lucky and get out of danger without scratch - but it only needs once, when the luck runs out, people would find them in a situation that they may regret for the rest of their lives.

That is not to say, we are always being careful - we ourselves have had some downright stupid moments. However, when you grow older, you become slightly wiser and hopefully would weigh the risk/reward from a more cautious angle.