It's more that things are changing faster and faster. At the same time, my life is progressing (wife, kids, commute) and I have less time to focus and devote to learning.

At some point, I feel like I have to focus on the whole package and being a rounded human instead of knowing all the new hotness. Thats what I really feel Tims podcast fosusses on; doing less with more and optimising life with whatever advantage is at hand.