For those flying in the UK, the weather is one of the biggest issues.
Training takes forever to wait for good days
Weekend pilots often struggle to get consistency
When the Wx is good, every man and his dog can be out
Questionable Wx can lead people to get up, as it may be even worse when they're next due to fly
For those not flying that regularly, they can then struggle with falling cloud bases and x-winds > 10knts.
It's changeable and makes any kind of distance flying hardwork, which leads to people just flying in their comfort zone of 30 minutes from the field