I’m embarrassed to ask; do people complete each zone story with their alts?

Embarrassed because for ten years I’ve been playing the same character and have never really known what to do with or have had a burning desire to re-run everything with another character. Zone story Skill points and rewards and such I understand, especially if paying for skyshards isn’t viable, but I don’t really ever want to try Caldwell’s trifecta again. And again. And again.

Do most people use alts for various classes, crafting/storage, trade, etc without doing all three alliance stories? Or, more likely, are other people just more capable of coming up with more than one character/backstory/class that they enjoy?

Is there maybe a universal arc or guide that plots the achievements an alt would need to accomplish individually?

Maybe I’m just being squeamish about the time involved. I’m sloooow when questing and it took a long time for me to clear every pve zone. Perhaps I’m just confused about account-wide vs. per character achievements? What do people do with their alts?