The reason I joined Crossfit was because I was getting bored of the same routine I was doing at my old gym (goodlife) and realized what I was doing wasn't building functional everyday strength. Going to the gym started becoming more a chore then being fun which is when I new I needed to try something new. I heard about crossfit from friends and online and decided to give it a try.
The thing I like most about it is the intensity of each WOD and workout. I like how it incorporates Strength training and cardio, as cardio was something I rarely did before. Your never doing the same thing 2 days in a row, and every you'll be more sore then your average 3 sets of 10.
Years of working out and I never realized I was so far behind in actual real lifts. But improving everytime. If your stuck in a plateau with your regular routine you will defiantly never have that problem with crossfit. Things I am really focusing are double-unders and snatches.
My favorite crossfit memory so far was getting my first ring muscle up and the Catalyst games. Working out at normal gyms you dont have that drive or need to push harder. Crossfit you get to go in events to compete against other crossfitters, its the biggest adrenaline rush to show off your hard training.
My advice for newcomers would be to never get down on yourself or give up. It will seem different to you at first and you may feel out of your zone or routine, but you will pick it up fast it is definatly worth it. When I first started I told myself I was going to do 1 week crossfit 1 week at my old gym, and I haven't been back to my old gym since the day I started crossfit 4 months ago, thats how much you become addicted!