A house is not a black and white issue. In some places they are prohibitively expensive. Where I live, they pop up like mushrooms, which wouldn't happen if you couldn't find a job to afford it. The town nearest us, with a population of just over 1,000, is adding not one, but two new subdivisions right now. You'd be hard-pressed to find an apartment in that same town.
On the other hand, if you are willing to relocate for a potential spouse, why buy a house? For a single person, a house may be more upkeep than you'd like to spend time on and, unless you're looking to fix it up in your spare time, living there for just a few years won't likely get you ahead financially.
In fact, in some cases, living with your family might be a sign of financial maturity in that you're more interested in saving for your future home than throwing money at rent payments.
The fact is, if you're not very mature, living on your own in-and-of-itself isn't going to be a magic pill. Likewise, if you are mature in how you use what you have (time, money, etc), not living on your own won't be a deal-breaker for a potential wife. (Unless you plan to continue living with your parents once married... that would likely be a deal-breaker.)