Reasons to tax unhealthy foods?

I think taxing unhealthy foods is not right because it kind of takes away your choices of what to eat. I understand very well that people need to eat better food choices and they should but taxing unhealthy foods takes away that choice and you will be forced to eat healthy foods by the government rather than have a choice to eat healthy foods by your own decision. an alternative should be having a fundraiser to collect and help pay the bills like selling some healthy snacks for example