I used wood floor cleaner on my neck and took all dirt away.
Then used 1500 and then 5000 grit sandpaper on the neck. Now it is smooth and glass-like shiny. I love this feel. Can I skip the oil and wax treamtment? Does anyone do that?
If you took the oil coating off of the neck, you need to put one back on. It protects the neck from sweat oils and other nasty gunk. Yes, a totally unfinished neck can feel awesome, until the wood starts rotting out a few years later.
I don't think I've ever heard anyone report that their guitar neck rotted.
I suppose it's possible, but at the very least it's going to depend rather a lot on the type of wood.
EBMM puts a finish on their maple necks for a reason. I guess all the companies that finish their necks are just wasting their time then?
Maple is not an oily wood, like a rosewood or ebony fretboard. It needs to be sealed to keep out moisture, oil, dead skin, salt from sweat, and so forth. Ever seen those old strats and teles that the finish has worn through? Ever seen how the wood turns brown or green, and eventually starts to wear away?
Yes, unfinished maple exposed to moisture, sweat, and grime will rot away.