I would disagree that there is any reason not to fly under IFR just because you are unwilling to enter IMC. There are parts of the UK where I would be reluctant to fly under IMC due to poor radar assistance, but flying under IFR can make life so much more straight-forward, while instilling discipline to the flying. In the case of night flying in the UK you must fly IFR OUTCAS, and might not be allowed to enter IMC intentionally. That suggests to me that willingness is not a prerequisite.