Is it unethical to take GLP-1s for "just 20lbs" when someone else could NEED this

I'm going to be honest and probably get downvoted. But I genuinely do worry about this. I'm 5'7", 165lbs, BMI 26. Overweight but not obese. I have no comorbidities and I want to lose 20lbs for my wedding next year. I can afford compounded Tirzepatide out of pocket. And I know it would work.

But there are people out there who need it more. People with obesity and heart disease are waiting to get their fill. And I'd be taking supply from someone who needs it more. I'm genuinely torn on this. I haven't started anything yet because of this guilt.