This is already another stage, when children appear, moving becomes more difficult, because they have friends, kindergarten, school, environment, hobbies and for children it is all much more difficult. But there are such people for whom changing location is much easier than for other people. I think that most often their own home will be a priority for a young family, especially when they decide to have children. But I do not see any difficulty in selling the home and moving to another place and buying a home where they are moving.
Most parents choose a good environment for their children to grow up in, and frequently moving around makes it difficult to get to know the neighborhood. In the context of investment, I agree that a house is no longer a potential investment, as discussed previously. However, when faced with marriage, it's much better to build your own home and not move around for whatever reason. If others have different views, that's fine, because everyone has their own perspective, but for me it's better to settle in one house with a much better environment.