blog actual title: "Screw Your Passion. Get a Job."
Both the submitted title and the blog's title do not pinpoint the author's main issue: don't make others (such as your parents) unfairly pay for your pursuit of passion.
It's not about "passion". It's about funding.
They are orthogonal. So... either:
1) pursue your passion part time while paying the bills with a "day job" -- which is what many musicians, poets, novelists, artists, etc do.
2) consciously downsize your lifestyle and stick to the budget of a starving artist (cheap apartment, used car, no Starbucks) while selling your artwork on the street or whatever. When the big commission money from the Guggenheim Museum comes in, you can start buying Starbucks.
Many variations of those 2 options can keep passion-seekers from burdening their parents.