Last year I went to Dorney Park, Hersheypark and Great Adventure multiple times, Knoebels, Fun Spot and Kings Dominion once.
In some ways I prefer regular amusement parks to Disney. Besides the ridiculously inexpensive prices (for under $150 a year, I get admission to all Six Flags parks with parking, 2 meals and a snack per visit and unlimited soft drinks), I try to go when they are not crowded and can enjoy going on ride after ride with hardly lines compared to Disney where even on a low crowd day, the more popular rides can still have 45+ minute waits. It's also less stressful not having to worry about scheduling FP+ reservations or having to get to a ride before the FP+ expires.
I also prefer really thrilling coasters to what Disney has. I can ride a coaster like Millennium Force or Maverick at Cedar Point, Nitro or El Toro at Great Adventure, Twisted Timbers at Kings Dominion and think "wow, that was an awesome coaster." Space Mountain and Rock N Rollercoaster are fun but don't compare to what is found at other parks.
During the summer I go to Dorney Park almost every week since they have a great water park and really enjoy spending a lot of time in the water parks, water rides on the amusement side and then go on each coaster.