Hi Sara,
This is a very common concern among parents of little ones. You've already said that you "want" to take your daughter, so I think you've answered your own question...go for it! There is plenty of things to see and do with a toddler. Walt Disney World Resort is extremely accommodating and welcoming to guests with little ones, which makes is probably the "easiest" vacation to take with a toddler. From the dining experiences to the details in the attractions, everything has been designed for the safety and comfort of little ones.
The biggest argument I typically hear is that "they won't remember it", and this could be true. However, YOU will remember it. The ability to spend time with your child, in a family friendly environment without the every day distractions of work, laundry, dishes, grocery shopping etc really enables you to have quality time together.
I encourage you to go, enjoy and take lots of photographs!
For additional information regarding traveling with little ones, click
HERE.