The more complex or captivating blends demand more mental attention, I am beggining to appreciate simpler blends as they allow my mind to wander and focus on other things than the flavour of the tobacco.
I definitely am a critical smoker. Always analysing the flavours. Especially if I have read reviews and go into the experience expecting something. It is true that certain blends can lend themselves better to exploring, but you can get in depth with anything. I love intriguing complexity, but I enjoy the subtle nuances of simplicity too.
The thing is that there isn't really many tobaccos that I don't like, I can appreciate any kind of blend. It helps that I have grown tobacco and ordered whole leaf, and know what tobacco tastes like in different stages of processing. So I don't really enjoy a pipe more or less because I am critical, but I guess I don't get as critical as some, by taking notes or worrying about what I'm doing. First and foremost is just enjoying the smoke. Sometimes that means picking it apart, sometimes not.