Disney World and other theme parks alike are often characterized as childish places, where you take your kids for vacation or where you went as a vacation as a kid. Although that can be true, it also can be fun as an adult to go to theme parks and often can be even better than when you go as a kid. I didn't go to Disney World until I was 16 and I still have fun going to Universal Studios in Florida.
1. It's an escape from the 'real world'
In today's crazy world where there seems to be no break from some horrible news story and the regular stresses of adult life, being in a theme park can be truly relaxing. Sure, going to a beach can be to or other vacation spots, but in theme parks you feel like you are in a completely different world and can fully separate yourself from your responsibilities at home.
2. You can drink!!!
One of the best parts of going to Disney or other theme parks as an adult is that you can drink! And if you don't have kids with you, you can let loose and drink all the beer you want while at Epcot from all the countries, or try all the Harry potter themed drinks at Universal (there's not just butterbeer, there is themed alcoholic beer available too). And since you are on vacation and don't have to worry about your real responsibilities, you can drink whenever you want to.
3. You actually (probably) have money to spend
Sure, most of the things you can buy are kind of useless and most likely will sit at your house and won't be used, but in the moment you have the freedom and ability to buy the things that you really want. You don't have to beg your parents to buy you those sparkly Mickey ears or even that extra serving of ice cream at the end of the night before the fireworks start.
4. You have more patience while waiting in long lines
One thing I've noticed about myself as I have matured and gotten older is my patience levels and ability to sit and wait for long periods of time. I'm not saying that I want to wait in an hour long line for one ride, but if I have to it is not going to be as horrible as it was when I was eight years old. Plus we all have smart phones now with texting, games, and social media to take up the time. I'm sure kids these days also have this, but as a kid I didn't and even going to closer amusement parks was tortuous because of the lines and the boringness of waiting.
5. You have control over what you do
If you're going as an adult, you most likely are there with a group of friends or a significant other, and have a lot more control over your schedule than you might have as a kid or even as a teenager there on a school trip. Which means you can skip the boring rides or just spend time eating and checking out the shows if that is what you want to do. You don't have someone directing you to character pictures or experiences if you don't want to do it, and that can make your experience ten times more enjoyable.
So as you plan your spring break or summer vacation trip, simply going to a beach can be relaxing and fun, but going to a theme park can also be a fun way to disconnect from reality and have some fun away from home and your responsibilities in real life.