Loyalty? That depends on what you mean by it. Does it mean that when my preferred airline is in the same ballpark when it comes to fares, I'll take it?

Sure. Especially if it is more convenient than other airlines.

However, does that mean I'll just say, nah, it's 100 percent more to fly airline x than it is to fly airline y, but I am loyal to airline x so I'll fly them?

Nope. Not unless it's for business and the time difference is significant enough that it makes sense for me to do it.