I've also lost the enthusiam, though not the capability, for deep detailing.
Thankfully, modern products like the spray coatings provide comparable performance, with much less work.
Old school products like Collinite have their devotees, and I used to be one of them.
But ever since trying 3-in-1, I doubt I'll ever go back to a classic paste or liquid wax, unless I really want to experience that grind again.
No longer have the need to warn up the bottle (with 845), apply, let flash, and buff.
Simply spray on, wipe off, like a quick detailer, and get comparable protection, as many a durability test on YT has shown.
The reduced time and effort also allow for more coats (as suggested for the initial application) or more frequent applications, if some OCD needs to be satisfied, and reduced chances of waning protection.
Next time the new ride, or something that better warrants it comes along, I might spring for something like Can Coat, and see what a costlier product offers, and how the technology has evolved.
Having the luxury to do it the old way is great, but there's no longer the necessity to do so.