Automatic reversal is an important feature required in any automatic garage door opener since 1993. If your garage door doesn't have a reversal feature when anything passes under it that is taller than 6 inches, you should look at having a new opener installed, so pets and children can be safer.
For Security's Sake
Your garage door opener may have a single code it uses, which makes it vulnerable to thieves who want to access it. Newer openers feature a rolling code that is more difficult to crack.
Garage Band Competition
If your garage door opener is loud enough to drown out the garage band practicing inside, you should get a new opener. Your neighbors will appreciate when you come home late at night. There's enough noise in the world without having a loud garage door opener.
Newer cars have HomeLink, which allows the car to directly communicate with the garage. This eliminates openers and the problems that come with them.
You can link your garage door opener to your smart phone. No more openers to lose. Your neighbors will think it's cool, you'll be on the cutting edge of home security, and you won't have to worry about someone breaking into your vehicle to get at the garage door opener stored there.
Back It Up
If the electricity goes out, it won't help to call for garage repair in Marietta if your old opener doesn't work. Newer garage door openers have battery backup, so they can work all the time.