Imagine going off to live in the woods with a handful of other individuals, 100% off the grid and with only the tools you can carry. Inevitably, it wouldn't be long before you start insisting that everyone help out with farming or hunting or repairs or something. It's literally built into our DNA that individuals should contribute some labor to the betterment of the tribe in exchange for the security and comfort the tribe provides.
Now, fast-forward to the modern world. We have much, much bigger tribes called countries, and we have a way of talking about and trading human labor that we call money. But it's still true that you should contribute some of your labor (i.e. money) to the tribe (i.e. your country) in exchange for security and comfort (i.e. civilization).
Taxes are moral so long as the taxed individuals consent to be part of the entity imposing the taxes, and there are very few individuals throughout history who have actually been willing to opt out of civilization. And, since you're reading a page on the internet you are clearly not one of them.