Apparently they are more and more at risk. Bees pollenate the vast majority of flowering plants on the Earth, and their counterparts including hoverflies are also under threat.
What with? Insecticides, that are used to control insect pests. These include Neonicotinoids that have been found to disorientated bees (as well as killing them) so they cannot find food. Without them we would not have fruit and vegetables. But unfortunately big pharmaceutical companies keep wanting to sell insecticides. There have been court cases that stopped their use. But they fight back.
If only we could use non invasive alternatives. Biological treatments that would eat pests. Like nematode worms, for instance. The problem is humans need quick solutions to save crops from things like locusts. But I think we should use these things sparingly. There are many ecological and moral questions and problems. I hope we can sort it out.