Cutting spaghetti is a big no-no in Italian dining etiquette. A significant part of Italian culture and a staple in its cuisine, pasta should be treated with respect.
To Italians, there's only one way to eat spaghetti: twirl it around your fork. To do so, separate a few strands of the pasta at a time instead of twirling the whole pile.
As you twirl the strands around the fork, pull them away from the rest of the pile. When you reach the end, you should have a bite-sized nest of pasta that can be eaten gracefully.
If it takes time to master this, remember it's better than cutting your spaghetti. The same method applies to other types of pasta, like fettuccine, linguine, and bucatini.