Some taxes are good, some are bad, it depends on the context- What is being taxed and what is the money being used for?

But you just rejected the idea that taxes could be bad out of hand, which is it?

Sin taxes don't socially engineer bad habits away, they just make the users destitute. This usually disproportionally affects poor people because they tend to rely on these things just so they're not completely miserable.

Exactly ^ but making people destitute and miserable is just fine as long as it's in the name of the greater good correct?

Go back and read the whole reply with this in mind.