hmm why one would want 'always-on' i guess raising the wrist to look at the time ... is both ideal and battery saving too? please enlighten me.

I have an Apple Watch that doesn’t have an always-on display, and this lack is mildly annoying. Most of the time “it just works”, but there are times where I would have like a smarter raise detection. Always on display isn’t necessarily the best solution to this problem, but it certainly is one.

Because then you don't have to raise your wrist to look at the time?