This all sounds very good to me. Sure, we are *all* artists somewhere deep down and that is fine and good but we are also adults. I can assure you that when you are 20 the struggling & misunderstood artist is hot. It's intriguing. The 40 year old "trapped artist" saddled with debt, two kids and a wife he is "kinda" married to isn't much of a prize. So it's probably good his brother is encouraging this phase. Soon enough everybody will grow quite bored of this (even the young pretty ones) and then and only then will he decide what path to choose.
Hell, play along. Become less rigid in your communication and perhaps hold back on your need to define anything right now but you. You will ALWAYS be a woman and mother and right now that is what you focus on.
