Yeah but real estate is something even people with seriously subpar IQ understand well, like gold. Its a conservative investment in most places, but risk of losing it is next to 0 realistically, which is something folks like a lot. Those that invested 20 years ago in many cases saw massive returns, in very safe manner. Not even going into airbnb and similar.
Also, if your down payments on mortgage are equal to rental fees, you won't save much renting, you just have better flexibility with moving, something great for single folks but families want opposite. In our case, for example we pay less mortgage than we would be paying in rental for same place (can check easily since symmetrical apartment next door is rented).
I don't want risky investments with potentially better returns for me, real estate is good enough.