Festool make their MFT work table 35 1/4" or 895mm high. I doubt they just plucked that as a random number out of thin air. Although I suspect they've chosen 35 1/4" as the lowest acceptable height for power tool operations in order to maximise the bench's stability.
My current bench is 36 1/4" or 920mm high. Purely by coincidence my saw, planer, and spindle moulder are also 36 1/4". Again, I doubt Felder arrived at that number by just flipping a coin.
I've worked in workshops with 38" high benches (and craftsmen who ranged from 5'6" to 6'4") and found them excellent for jointing, inlaying, shaping, jig making, scraping, sanding, veneer cutting and all the other tasks that constitute the majority of bench work. It's an acceptable height for hand planing provided you have machines for most of the donkey work, if you do rather more hand planing work, but still have some access to machines, then 37" or 36" might be a better compromise. The next bench I build will be 37" high.
My sharpening station is 39" or 990mm, that works very well for the linisher that does most of the serious metal removal, but can be a bit too high for extended sessions of hand honing.
For assembly and glue ups of medium to large size case furniture I prefer much shorter trestles or saw horses, applying sash cramps at above head height doesn't lead to the best results.