This pretty much summarizes my argument against owing a house/pet/car/child etc.
In short, ownership dampens your happiness and burdens you psychologically. Being able to leave your home and not worry about a pet adds to your happiness. Keeping your housing costs low and not accidentally accumulating stuff allows you to spend time and money on things that matter more. Riding the bus frees you from mechanic’s fees and being worried about “that squeaking sound the car makes when starting up.” And avoiding very nice things allows you to avoid the “good china” problem where you don’t want to use something for fear of damaging it.
When you are young and don’t have a family, the extra freedom you can derive from not owning tons of stuff enables you to go to Europe for 3 weeks on a whim, quit your job and pursue your passion, invest all your energy into learning a skill, or build/strengthen relationships. Surely these things are worth an extra few hundred a month for a few years.