It Turns Your Relationships Into Competitions
Buying a house is like lighting a signal fire to all the world that says, "I'm here! I'm an adult now, motherfuckers!" However, know that when you hold up that beacon of maturity, you are effectively dividing everyone you know into two distinct categories: the house-havers and the house ... not ... havers.
When it comes to the first, there will be a natural compulsion to "keep up with the Joneses." Yes, the phrase sounds super outdated in 2018, when we're supposed to not care about how nice Rick's new rug looks, or the fact that Amanda owns a smart fridge that could probably enslave humanity if it wanted to. But remember that the house isn't just a box to keep the rain off; it's a symbol of you and where you are in life. Thus does the game of constant one-upmanship begin.
It's not like you cease to have friends or social relationships. It's just that they just all seem to sit adjacent to the Adulthood Olympics you're now competing in. The minute someone gets their bathroom remodeled in a way that you can't really afford, you suddenly look inward. "Am I not THAT adult yet?"
Not that any of your renting friends will sympathize. Once you buy a house, any problems or difficulties you may have in your life, no matter how stressful, will come off to them as champagne problems -- the rich family on the Titanic lifeboat complaining about the seats being cold. You find yourself on the other side of a cultural divide you didn't even know existed.
Related: 4 Things I Learned When I Tried To Sell A House On My Own
It Becomes Your Own Little Castle (Or Bunker)
Most apartments are going to require you to interact with people -- if not roommates, then neighbors with whom you're sharing walls and hallways. But once you own a separate little structure ... suddenly it's you vs. the world.
Your house becomes both a castle and a cult compound, where your innermost desires run rampant. You can be who you want to be, and no one can judge you. If you feel like reciting the "Tears in the rain" speech from Blade Runner while standing naked in the garage, that's exactly what you have a garage for. You are the ruler of this kingdom.