Wow, I came here to say that. lol. 5,000 miles is the easiest interval to use, since 5, 10, 15, 20, etc. just has a ring to it.keep up with ot yourself, if you want the 5k oil change just change it every 5k miles, can't be that difficult to keep up with on that interval.
And btw, it's also the best interval for rotating tires.