We walk through fields which some of the year will have cows to get to school, to get to the doctors, to get to the supermarket. My kids use these routes daily. I used the same routes with them as babies. Unless you’d prefer the route that is four miles further on unlit A roads, to get to the bridge, and back? What’s safer?
I wouldn’t be able to use most local services or do any of my outdoor hobbies if I couldn’t cross a field or several. And for some of the year they contain cows, sheep, horses. I’d be penned in to my garden or only able to walk on tarmac roads without crossing fields and so would most people I know. The cars are 100% more dangerous than the cows, neither is risk free, both require respect and understanding and for you to behave according to the rules to minimise the risk.
National walking trails, published and monitored, advertised and funded, stretch for miles through farmland filled with livestock. Local trails advertised and published by councils and tourist information take routes through fields with livestock. Pay-to-enter, risk-assessed footraces, fellruns, marathons, sponsored walks and walking marathons take routes and waymark through well populated cattle fields. Local historical houses with national significance and well used well known grounds hosting all kinds of events and trails have free roaming livestock.
It is mind boggling that anyone could suggest not entering a space with livestock, because it’s akin to saying, don’t use roads and you won’t get in a car accident. Well sure, but you also won’t leave your house.