For the kind of money I could spend, I could get a four seater cross country aircraft that could cruise at about 140 mph. Not bad, but not as fast as I would like. But, this aircraft would not be able to do aerobatics. So, I would need two aircraft. Production aircraft also must be maintained by licensed aircraft maintenance engineers, and this costs a lot of money.
Homebuilt aircraft have several advantages.
First, there are several proven designs that are good cross country aircraft and can also do mild aerobatics. Second, you get more bang for the buck, because you put in a bunch of sweat equity building it, instead of paying for the labour. Third, you can do all the maintenance yourself, and save a lot more money. But, something else always came up, and I never started. Finally, I realized that the perfect time to build an aircraft would never arrive.