I was very reluctant to move from WP to SS, but my designer at the time insisted!  Try it, she insisted!

Fast forward two years, and I'm so happy with the decision! 

I've decided to share links to several awesome posts with answers to all the questions about moving to SS!

Paige Brunton has several great posts including these:
Your Top 50 Squarespace Questions, Answered
65 must-read Squarespace tips + tutorials blog posts

Think Creative Collection has this post:
7 Reasons Why We Chose Squarespace (Over Wordpress, Muse, Wix, Godaddy, etc.)