A long time ago, in a Seinfeld episode far, far from recent memory, Jerry had a discourse on "the pop in," the description for an unplanned visit by a friend or family member. Jerry said he hated the pop in, but George and Elaine both loved it. In reality, the pop in was what made the show; if it weren't for Jerry's friends constantly being at his place, the show would have been limited to establishing the character's rapport through their shared meals at Mort's Diner, and it would have quickly devolved from a show about nothing to a show about waitress and food jokes.
I personally love the pop in. One of my favorite parts about living in the dorms in college for all four years was that people would constantly drop by and hang out. Nobody needed an excuse to come over, or had to call first before stopping in - they just walked through the doorway, plopped down on the couch, and sometimes said "What's happening?" As a result, our dorm had a very close community of which I have many fond memories.
I welcome that level of hospitality today - I want people to treat my house like theirs, and feel free to stop by for a visit no matter the hour or occasion, with no need to call first. I love it when people want to come over. Similarly, I love people who treat their houses the same way, who I know I could visit if I had a free afternoon or evening and they'd be happy I dropped by.
Unfortunately, that's not our culture, or at least it's not most people's culture. Why is that, I wonder? Some people just don't like visitors, feeling that their home is their fortress of solitude, the one place they're free from other people. Some people take pride in having the reputation of a completely organized person whose house is always spotless, so they only have visitors when they've had a chance to clean the house from top to bottom, which ends up being seldom if ever, and then only for "special" guests. Other people take pride in having a house that provides an appearance of wealth, and until they finish redoing that kitchen or can buy that new living room set, they don't want people to see their current standard of living. Still others take pride in being a doting host, who waits on their guest's every need, which can be a physically or emotionally draining task.
Christians are called to hospitality, and I think that means not only being open to visitors at any hour, but also encouraging them to come. There's no better way to show love to your brothers and sisters and to enjoy their fellowship than by bringing them into your house. The same goes for unbelievers - there are few better ways to show someone you care about them and are interested than to invite them to your place. Granted, there are limits - you shouldn't have to give up your every waking moment of privacy, and you shouldn't become a permanent fixture at the home of someone either, showing up right when the oven timer dings. Take the initiative today - invite people over to your house. Don't feel the need to have things be perfect, or to wait on their every wish, just take a step of faith and see how God can use it to bless you and draw you closer to your Christian siblings.