Spaghetti without tomato sauce? That's like pissing in the morning without farting. Sure, it'll get the main job done but it's not the same pure pleasure.
There's a whole world out there!
Tomato sauces can be acidic, so not great when drunk. Also tomatoes stain (if it were to come back up) !
Could be the recipe with the highest ratio taste/effort you can find, something that even a drunk student can pull off a 4 in the morning, so they probably just continued their tradition from the university years
Oil needs a bit more help, otherwise it's just grease on noodles. The starchy water the pasta was cooked in can do most of the heavy lifting there, but the addition of garlic helps too.