As it happens I'm an artist too... I've made a career in art. And in music I have been recognized to some small extent by other music artists and been heard and appreciated (a bit, not to any huge extent) beyond that.... Hence I'm saying that your goals are not beyond reach... your reply here suggests that you misunderstood my post to you. I'm the one saying that you COULD achieve your goals IF you make great music.
However... you're going about things in a slightly back to front way. The way you explain your ambition is probably causing others to see the negative side. If we shorten your opening post it kind of says 'I've never played a note before, I have no idea how to make music, but I want success. Should I bother trying?' ... I read it slightly differently, I don't think you're looking to become a star or make a living from it, you just want to realise the music you imagine, and then be heard and have your music be appreciated by a few people, right??
The way that's back to front is that your starting from nothing and yet you're focusing on recognition. As an artist myself, I focused on creating art before I even thought about making a career from it. You need to know whether you're any good at something before you start thinking about your work being appreciated by others. You need to make art/music that YOU believe is good first. And personally I think it's best to make any kind of art firstly because you just want to, because you love it or because you're just compelled to. And unless you're a natural musical genius, if you've never played an instrument or made music before you should expect it to take quite a long time before it even sounds 'ok'.
Taking lessons on Youtube won't make you great if you've never even tried to make music before. Get a DAW, get a keyboard for it, and just start making sounds. Online tutorials will help you learn how to use the DAW, but not how to make great music.
And don't be so defensive! I'm trying to be positive and helpful. People here will help you if you have the attitude that you just want to make music. Asking 'should I bother' isn't going to get you many great comments.... If you want useful feedback, just make some music and post it. Get stuck in. Post your music. For all we know you might be brilliant... it is impossible to know until we hear.