I'm not a huge fan of spaghetti, but my family loves it. It just so happens that the sauce (and pizza sauce) are the ONLY way I get any tomatoes into my diet, therefore, I do try to make it every other week. It's imperative to use whole grain noodles (if you cannot hack it for whatever reason, go half and half). Using fresh sauce without sugar and whole wheat makes spaghetti a very healthy AND filling meal choice.
Whole grain spaghetti noodles do not cost much more than traditional spaghetti noodles-which is generally not the case in eating healthy-go for it!