Is it worth playing this build as a casual player?

Yes. Tho I think it's weaker than ED or TR per example, maybe because the upcoming theme is "blood" it will be stronger in the upcoming league (usually that's not the case).

Is it worth playing this build if you play a lot and you are an experienced player?

No.

No matter how much you invest, I had 6 tier 1 mods on every item besides bow and against bosses or extremely buffed maps you will die sometimes. Damage wise you will not do as much as other builds for the amount of investment. Not even close.

I stuck with it cause I was stubborn and wanted to make it good. And it was good in the end but just for solo play, not for carries or anything crazy. The way it would deal with bosses is they'd die before mechanics in most cases.

tl;dr

Good for beginners, if you are an experienced player/play a lot, it's a good starting build but DROP IT after you get a 6l and some currency and switch to something else.

My final PoB DPS was;

Split arrow = 4.285.215 Puncture = 14.753.596 (no Assailum)

With the best possible Bow I'd get 1 million DPS more on Split Arrow and 2 on Puncture.

https://pastebin.com/uPEbcQkL

PoB of my character