Nor is it particularly difficult, ended up doing my own a few years back when I was still in school and penny pinching.
Found a place that rented out a lift and use of their tools for like $25 for an hour. Bought some fluid, watched some videos ahead of time, and got it done in like ~30 minutes.
You def should change transmission fluid, I was just saying that these vehicles are engineered well enough to hold up for quite a while with little to no care.