It's a growing bubble. It probably will keep growing. One day it probably will pop. It might pop fast or it might sprout a pinprick leak
It might pop Monday. It might pop in 2030 after tripling between now and then. Actually, it might not pop but the growth might slow and allow the values to normalize. We don't know, so it's pointless to lose sleep over it.
You can't afford to sit out unless you think the market will never post another ATH during your investing timeline.
I don't think that's necessarily the full story. I suspect the mag 7 are going hard in AI as a strategic hedge: they can afford to dump huge amounts of resources into it even if it doesn't pan out; but they can't afford to sit it out in the event that it *does* pan out. It wouldn't surprise me if a ton of mag 7 c-suite types think AI is all hyped bullshit, but that they have to go along for the ride so that their stock goes up with this hype wave. Then if it crashes it crashes and they have their tax people work the magic.
Buffet indicator at ATH, CAPE ratio ATH, Gold going parabolic. $1T in AI capex investment for $20B in revenue. Rare earths used to make those ai chips now banned from being exported to the USA, and Tariff trade war intensifying. Also, gov shutdown now is resulting in over 700,000 people not receiving paychecks this month. It will be reflected in consumer data very shortly.
What goes up must come down.