Honest question...if manual is so good, then why don't Formula 1 cars use it?
Skip gears: main reason to do this is to conserve gas
Full launch control with torque selection right at the balls of your feet: I am not sure but most likely the cars either have optimal launch control programming or are tuned to allow them to be optimally launched when need be
Feeling the locking of the clutch through your toes: not necessary
Not worrying about the trans overheating doing lap after lap: they have ways of cooling their transmissions
Knowing you passed someone on the track because of you and not some overly-artificially-intelligent computer: don't give a sht. just need to win
...Clutch... ...Kick...: this is for drifting mainly
but the main answer is that they only care about one thing in f1: winning. and they have plenty of money to spend towards that. the computer-controlled-clutch systems they use are faster than a human, and they've built them to be invincible cause they can.
I personally have an evo mr, which has one of those fancy dual clutch transmissions, and I kick all kinds of butt on the track, but it overheats in 5 laps. also, I feel the car is winning for me--it's too good. that car is god mode, and it sux. I've also owned plenty of other cars in the past including a corvette z06, but despite having far faster cars, my s2000 with a simple manual transmission is the best and the only one I take to the track now.
so to tie this in with the zeiss lens: I suppose that lens is sorta the equivalent of a manual-transmission Ferrari (which they don't make anymore sadly.) one thing that hasn't been said too much but I think is one reason people get manual lenses: fun. I have a canon a-1 myself with some fd lenses, and shooting with it is much more fun than with my dslr. if I had the money, I would have enjoyed a manual Ferrari when they still made them, and likewise I think it would be a blast to use this lens.
k... I need to wake up in 5 hours to drive to the track tomorrow (seriously), so.... good night.