Whether or not to drain the ground beef when making spaghetti depends on personal preference and the fat content of the beef.
If the beef has a high fat content, it may be a good idea to drain off some of the excess fat to prevent the spaghetti sauce from becoming too greasy. This can also make the dish healthier overall.
On the other hand, some people prefer to leave the fat in the beef as it can add flavor and richness to the sauce.
Ultimately, the decision to drain the ground beef or not is up to you. If you’re unsure, a good rule of thumb is to cook the beef, then spoon it into a colander and let the fat drain off before adding it to the spaghetti sauce.