Mike of Northumbria

No one, in any line of work, has any right, entitlement, or expectation to make a living from it except by providing a product, service, or skill that people are prepared to pay for.

Musicians are not a special case, nor should they be. Many people do regular jobs to suport a hobby and most folk musicians are hobbyists because they know how difficult it is to make a living from it and many/most do it because they love it and any payment is a rare bonus. The same is true of other types of musician and of those in the acting profession.

There is nothing to feel guilty about.