Most of the things that could come with traveling are exciting and fun, but airport security could be a bit stressful for people who don't know the rules and regulations. Thankfully, they are only strict for safety reasons, and making a mistake once or twice is normal. Checking the restrictions beforehand can guarantee that you'll pass through security quickly without having to spend more time than you want at the airport's security checkpoint.
Airport security is strict, and if you accidentally travel with forbidden items, there's a chance that you'll miss your flight due to the extra screening that will have to be done.