Yes, it’s ok to take more from you because it’s how social security can be offered to everyone, including you.
You say you’re putting money away into retirement because you don’t think social security will be there. Then you say you don’t want to help make social security there for everyone. The whole point is that if millions of people like you were able to add a little more to the bucket, then it would make life better for everyone.
This isn’t increasing taxes to start a war, or to bail out billionaires, this is real, tangible benefits to every citizen.