My basic pasta sauce is thus:
Chopped onion, sauted, then add chopped pepper, and courgette. If I'm using mince or other meat that needs cooking, I add that now, and fry it 'til browned. Then a tin of chopped tomatoes, a squidge of tomato purree, a good grind of black pepper, a sprinkle of mixed herbs, and then if it's not a mince dish, I add the protein - tinned tuna, or chopped up hotdog sausage, or cooked chicken.
I'll happily eat this three days in a row, which is handy, because the above makes three servings.
My other fave is carbonara - fried onion and chopped bacon, mixed in with the pasta and a couple of beaten eggs, over the residual heat in the hotplate to gently thicken the egg. A dollop of cream cheese adds creaminess.
I'd happily eat pasta (especially spaghetti) every day. I expect I'll go straight to 'big fat Italian mamma', without ever having been the 'alluring Latin beauty'...