How ghettoization works

I was chatting with my hairdresser and mentioned in the natural flow of conversation that I'm childfree. She told me that most of her clients are childfree. That's very bizarre. I chose her because she has a somewhat unconventional approach that is compatible with my own somewhat unconventional needs, and I ended up as part of a clientele with generally similar family planning goals.

Then I realized that a lot of things in my life have worked out that way. I chose something based on specific factors, and ended up surrounded by people who are similar to me in completely unrelated areas.

For example, I chose translation because it's the first career path that I've ever been absolutely certain I could do. (All the others I would have had to blindly trust that my education and training would get me there.) I took what opportunities were available to me, and ended up on a team full of children of immigrants, ranging from first-and-a-half to second-and-a-half generation. (This is notable because none of us are translating in our heritage languages.)

I chose my neighbourhood because it's located at a subway stop, it has all the basic amenities (grocery store, drug store, LCBO, banks, library, doctor, dentist) all within walking distance, and it's safe and comfortable. Turns out it also has a good selection of demographically-suitable women's clothing and shoe stores, and a decent range of restaurants and bars that I wouldn't feel out of place patronizing. When I first moved here, my big political issue was working towards the legalization of same-sex marriage (this was April 2003, and I had no idea how close we actually were); turned out my MP supported it wholeheartedly.

I keep making decisions based on the relevant factors, and finding myself surrounded by people who are similar or like-minded in other areas of life as well. I'm not quite sure what to think of this. On one hand, it's convenient. On the other, it might be making me narrow-minded. But then, it's not like I'm going to go out of my way to live somewhere that meets my needs less well or find a less suitable job (or get my hair done by someone I don't trust) just so I can be around people who aren't similar to me.

I'm not quite sure what to make of this, but it's kind of interesting.