Funny, I really like the drop-in Series filters and ultra-compact hoods -- which are not really optional with one of the lenses (21mm, I think) because the front of the lens protrudes forwards from the surrounding ring.
As for not needing the speed, well, some shoot low-light and others don't. I regularly use ALL my lenses wide open. Not for all shots, but even if it's just 1%, that's a lot of shots over the course of a year.
On the other hand, I almost never use the wide-angles (35/1.4, 24/1.4, 21/1.4) for differential focus, because that looks odd to me with wide-angles. I do it with 85mm and longer lenses, though, and sometimes with 50mm.
Finally, as well as snobbery, there is anti-snobbery: people who seem unable to accept that expensive lenses have any reason for existing, other than to gratify the fantasies of overly wealthy photographers.
Sturgeon's Law* applies as much to photographers as to anything else, so in the nature of things there are more bad photographers with wonderful lenses than brilliant photographers with everyday, ordinary or average lenses. But there are also a few photographers who can afford ultra-expensive, highly specialized lenses and can also use them very well indeed.
*Someone said to Theodore Sturgeon, "Ninety per cent of science fiction is rubbish." He replied, "Ninety per cent of everything is rubbish." This has since become known as Sturgeon's Law.
Tashi delek,
R.