The real life luxury of just being able to toss a 14" macbook pro that weighs almost nothing into your bag and have a savage development machine with up to 96gb of ram, no fan noise and minimal heat, great battery life, is very valuable.
I've started noticing all the processes that really bog my intel mac down. Indexing, running out of ram, builds, etc.. I was pretty pessimistic about macs for a while, but it feels right now like when they started putting retina displays in them. My previous mac couldn't even smoothly play a 1080p YouTube video very well.