If something brings you pleasure, there should be no guilt associated with it. The reason people find themselves talking about guilty pleasures is because someone has taken their right to enjoyment from whatever it is that they like doing. It’s because someone has asserted themselves as an authority, as a person with privilege, and cast judgment upon an activity.
No one has the right to tell you what you should or shouldn’t like.
Regardless of what your education level, your financial status, your job, your haves-and-have-nots in life, what you choose to spend your free time doing is your choice and your choice alone. But more than that, it’s your responsibility to respect that for yourself and respect that for others, too. You should never feel guilty for what you enjoy, and you should never make anyone else feel guilty for what they like, either.