As you can tell from the responses here, it depends on how you use your car and where you live.
My car came with the hardtop option and I like it. But, I live in a wet area and drive the car all year in all conditions. My hardtop is typically on the car from Oct thru May and on the storage rack in my garage during the summer months. As has been said it makes the car a different place inside especially when the weather is bad and gives a completely different look to the car when its installed. I've found the installation quick and easy, takes just a couple minutes. It's not heavy but is awkward to handle so best to have one person to help.
Some like it and some don't, it's your call and your car go with what you like!