Because honeybees are just one of many pollinating insects whose numbers are falling dramatically. They just happen to get talked about a lot in the press because there are people with a direct economic interest in them.
>Using historic data sets, we quantified the degree to which global change over 120 years disrupted plant-pollinator interactions in a temperate forest understory community in Illinois, USA. We found degradation of interaction network structure and function and extirpation of 50% of bee species. Network changes can be attributed to shifts in forb and bee phenologies resulting in temporal mismatches, nonrandom species extinctions, and loss of spatial co-occurrences between extant species in modified landscapes. Quantity and quality of pollination services have declined through time. The historic network showed flexibility in response to disturbance; however, our data suggest that networks will be less resilient to future changes.
News article: http://www.theguardian.com/environment/2013/feb/28/wild-bees...
Pesticides are far from the only factor, but adding that to habitat loss and climate change is hardly helping.
REVIEW: An overview of the environmental risks posed by neonicotinoid insecticides http://onlinelibrary.wiley.com/doi/10.1111/1365-2664.12111/f...
Forget about the bees, it doesn't sound like something i would like to have on my food...