This is a rather strange position to take, though I can understand your point, unfortunately it misses any qualitative aspects of life, and instead only focuses on the qualitative ones. You have also conveniently forgotten to mention any of capitalism's evils, including imperialist expansion, which has itself been responsible for a great many deaths. Instead, you have focused on the "by-products" of capitalism, that is to say, enlarging a workforce and giveng them what Marx called "double freedom", but at the same time capitalism has also given people double separation - these workers are separated from the means of production,
and the products they make. This is no less true in China and India than it is in Britain (especially during the laws passed in the 16th century in the enclosure of the commons).
For what it's worth, I do my part in criticising capitalism, spreading the works of those who also criticise it, and prompting people to think of alternative modes of production. I think that not only has capitalism saved a great many lives, but it's improved a great many too. That doesn't mean that it should be here to say, nor that its evils can be ignored. To use an analogy, capitalism is the boat one can use to cross the river; you don't carry the boat with you once you've finished.
In another system you refer to capitalism as simply being "freely trading labour and goods". To me, this shows your ignorance of the history of capitalism, and what it is today. Have you read "The Origin of Capitalism"[0] or any contemporary critiques, such as those of the Frankfurt School?
In short, capitalism requires a lot of separation and very strange ideas of liberty, which all rely on quite a neat subjectivist-individualist approach.
[0] https://www.versobooks.com/books/2407-the-origin-of-capitali...