Not an ideal world, there's not enough LARS units these days but I didn't say I do it routinely or without awareness of the situation! We carry TCAS for this reason.
However it's not practical to avoid flying because for example, Pennine Radar has been withdrawn (see recent NOTAMS) or to divert because Leeds Bradford can't offer a Zone transit or are too busy to offer Radar Information Service as you go around the edge of their airspace.
If we refused to fly because it was cloudy then we would be out of a job by lunchtime.
p.s. blame your father, I think he helped teach me
