First, I'll say WTG! Sounds like you decided to do this and you did it. Better yet, you were happy with the results. That's HUGE in my book. If it works for you, DO IT!
I'm 51, so I didn't grow up with a smart phone in my hand. However, I can't imagine not having my phone wherever I go. Wouldn't really want to for the most part. I love what it allows me, and my family, to do. Especially in a place so technology reliant like WDW. I remember our first trip when our girls were 5 and 7. I was learning all things Disney and was a bit overwhelmed when I actually walked into the park and started using the MyDisney app. It was a sink or swim moment. Either I get my PhD in Disney real fast or I continue to be frustrated with standing in line all day. Without my smartphone, I would not have had a choice.