There does seem to be a ridiculous headlight war over the last 20 years or so, as though there is a competition as to who can outshine everyone else. It can be bad when I'm cycling home from work in winter along the country lanes, and drivers can't be bothered to dip, or seem to have their lights badly aligned (road summits can be particularly bad). I can sympathise to a point regarding the comments on flashing bicycle lights, as I've tended to avoid these as I'm not sure whether they help, and the flashing increases visibility but makes it harder to judge the cyclist's position and speed. Some cyclists have very bright lights, which are only suitable for off-road night cycling, and should only be used on low power mode on road, but some seem to have gone the way of brighter is better. If cyclists could rely on drivers paying attention and looking out for them (i.e. properly, not a quick glance, oh well there is no large object therefore it is safe to pull out), then cyclists would not feel the need for bright lights or flashing lights, so perhaps you should call out careless drivers before blaming cyclists for trying to takle measures to reduce the risk of a life threatening collision.