Is capitalism the root of all evil?

I think a paragraph on why you didn't find Singer's response convincing would've improved this question considerably, as it would've allowed people to see where you are coming from and what kind of concrete answer would be useful for you.

There's a popular guide on asking good questions to a technical community, which I found useful (though it's pretty biting): http://www.catb.org/~esr/faqs/smart-questions.html 

People [who seem to be unwilling to think or to do their own homework before asking questions] are time sinks — they take without giving back, and they waste time we could have spent on another question more interesting and another person more worthy of an answer.

We're (largely) volunteers. We take time out of busy lives to answer questions, and at times we're overwhelmed with them. So we filter ruthlessly. In particular, we throw away questions from people who appear to [not put in much effort in doing research or asking a useful question] in order to spend our question-answering time more efficiently, on winners.

I think asking "Is capitalism the root of all evil?" without much context gives the strong impression of a less useful question, as it's very unspecific and in my experience value-laden and requires a tonne of unpacking (the article I linked discusses this a bit).

If it did, I am surprised why no one focused on that rather than the title. For me Capitalism is the cause or one of the biggest contributors or the maintainer to many of the issues we are facing, Global poverty and climate change to name a few.

I might give you climate change – though I would note that e.g. communist states also have very bad environmental records (see e.g. the Aral Sea), so there is still some work to be done to strengthen that case.

I don't agree with global poverty – I currently think  capitalism has historically been, and will continue to be, one of the most important forces bringing people out of poverty.

People say a lot of silly things regarding the connection between capitalism and poverty. There might be a more sensible case for a link between the two, but I haven't heard it yet.

Thank you for being open minded. In terms of factory farming and capitalism, can I ask you if you don’t think that factory farming came as a result of capitalism? And wether countries with less developed capitalist systems (if you even can call them capitalists) have less animal suffering?

I can certainly see a story where capitalism was the genesis and remains the driver of factory farming. But the more fundamental problem is that most people don't see animals as morally important, and that applies across nearly all economic systems.

There's a complicating factor here, which is that capitalism makes countries rich, and rich people want to eat more meat, so it's possible that that is most of the driver here. One could respond to that that in that case making countries rich is bad on net, but I think any path to a good world is going to involve making everyone in the world a lot richer, so if factory farming is near-inevitable in rich countries (in the absence of good technological alternatives) then I'm reluctant to blame capitalism, as opposed to humans in general.

I would be interested in seeing data on factory farming in less capitalist countries (e.g. the Soviet Union), compared to more free-market countries of similar wealth (if one can find any).