Having spent a lot of time in denial before investing in a few light wool turtlenecks and some Aran jumpers, I can only disagree.

When wool gets warm it expands, which cools you slightly. It seems to have a much better range of temperatures you can be comfortable in.

Synthetic jumpers and sweaters get stuffy quickly and after a few washes can end up itchy.

And no, good cable knits from non designer brands go for $100-$200 and will last many, many years.