There are a lot of good tips in the article about streamlining your connections.
While I mostly enjoy flying, travel days are busy and tiring enough that I hate to be rushed. I try to get to the airport early (often I've been grateful that I gave myself that extra time), and I don't take flights that have connections I consider too tight. I like at least 1.5-2 hours between my connections. I've been delayed on arrival often enough that having less time than that is no fun. As planes travel at near full capacity these days it's often difficult and inconvenient to reschedule your connecting flight.
That's especially true when I have to travel in winter. Storms and deicing of planes cause frequent delays. Some of these you can't avoid, but if your connection has a buffer you'll likely be okay.
I agree with Jonathan. I'd rather have time to relax at the connecting airport, get some food or a drink and browse the internet (most airports now have decent free wifi) before leisurely strolling to my connecting departure gate.