The money’s gone either way. Decide based on what happens next, not on what you already spent.

Spent money and spent time do not come back, whatever you do next. Continuing with something bad to honour what it already cost is just paying twice. The only live question is which choice from here leaves you better off, and the past gets no vote in it. Loyalty to your own old decisions is expensive.

Think of something you are continuing mainly because of what it has taken already: a course, a subscription, a club, a project. Ask what you would choose if it were offered fresh today. If you would not sign up again, that is your answer.