Greetings Univited Writer, writing is a form of art for me - indentations in my writing is part of the way I express myself (through the art of writing) and taking it out is basically changing the form of my expression (it is a way of editing my writing - an unnecessary thing in my opinion).
Your comment about "People who read online really don't care about indentations" is a generalization. If nobody cared, I would not have asked this question to begin with ...
Also, the comment about "Besides, their computers may read it differently" is irrelevant. I do not write to make a penny on Hub-pages. I write because I love writing. I do not write for any sort of audience and I could care less how people's computers portray writing on their screen. I write because I have been writing for decades and it is a hobby, something I love doing. I do not do it for anyone in specific. If people do read what I write, I am of course thankful for it but that does not change my attitude towards my writing.
I hope thins explains things a little better - thank you for your opinion though. I think your thinking was a little more technical than mine. All good, cheers!