Are scrolls and food worth it?

I'm currently new to Wow and have now the jobs herb gathering and glyph making, also the sub job cooking with which i cook the fishes a friend gets.

But by making the scrolls and the food i got buffs (i didnt knew this before...sorry xD) and i wanted to ask if these "+3"-"+6" i'm currently making are worth it?

thank you for your answer i hope the question isn't to opinion based.