I do agree that all lenses should come with their respective hoods. It's just a piece of plastic after all. What we don't need is those useless suede lens pouches that offer no protection whatsover!
I bought the hood for the nifty fifty but ended up never using it and gave it away free when I sold the lens. The 10-22 and 17-40 also share a hood that is rather pointless. I rarely use that one.
The 135L has a hood that just looks ridiculous and doubles the length. I try to avoid it if I can.
The 85 1.8 had a very flimsy hood.
My issue with hoods is that the majority of amateurs think they go on backwards! Which makes me look like the idiot geek that stands out!
That 17-40 / 10-22 hood has been of assistance on many occasions in minimizing lens flare at night. I have done a check and it makes a significant difference, dependent of course on the subject matter.
I use hoods for all my lenses now largely in lieu of protector filters. I find they offer useful protection (yes even those petals) and do often help with flare.