I would say no because if you do as I do I just use stam pots for when I'm low on stam. If you are a Templar you can use repentance as well and get back precious stamina; if there are corpses lying about. I usually only put 8 points in health and the rest into magicka. I like having the little bit of extra health to keep from getting hit from a one shot.
Yup, generally you don't. The exception I'd say would be PVP. Most Magicka builds at max level have ~13k Stamina. Using Tri-food instead of just Health/Magicka food will get you right about at that number. And that's just for CC breaking and the rare roll dodge/block.
Tri-stats food will handle it. DOn't need to spend points on it.
“Kings of the land and the sky we are; proud gryphons.” Stalker stands, the epitome of pride. Naked and muscular, his wings widen and his feet dig in as if he alone holds down the earth and supports the heavens, keeping the two ever separate.”
Gryphons guild - @Milvan,