You can't say same applies to all young people all over the world. Different countries with their different backgrounds and economic status of their young people. In my country, houses are equally expensive but most young people would rather splash money on cars that build a house. Although building a house does not seem like a priority to them, the major reason is not because they cannot afford to get themselves a house. Most young people just prefer to live in locations where they can connect with like minds and business partners.
Because of the insecurities in some countries that's why people aren't interested in building houses. The moment they get a permanent location which having a house signifies, it can make them become stuck to that location but having the freedom to move from one apartment to another through renting houses can help keep them in developing environment that encourages growth. When your environment isn't motivating you to become a better individual, you need to relocate but having a house can limit that unless you wan to let go of all you have invested into the building to living as a talent again. Don't build a house when you don't need it, house should be among some of our least priority and focus on building wealth.