Since I'm planning on getting my own car soon and trying to be more knowledgeable and independent, I thought it would be best for me to know these things. There's not always going to be someone around to help me change a tire, so I should know how just in case.
Of course, part way through my across-the-street neighbor, who's a mechanic, decided to come over to impart his knowledge on to me. I'll admit it was kind of annoying and confusing to have two guys telling me what to do as I was trying to pick up the tire to put it back on the car. (Oh, and in case you're curious, this is the same neighbor I sold my car to.)
Although I had to stand on the wrench at first to loosen the lugnuts because my arms weren't strong enough, it actually wasn't as hard or difficult as I thought it would be.
Now I'm not going to fight to change a tire if there's someone else nearby that's willing to do it. But, if I'm stranded some where with no one around, I can rest assured that I can change a tire (but if something else is wrong I'm SOL).