If you think I'm angry now...

... you should know that apparently it's all due to my age and it's likely to get worse for at least a few years before it get better.

Satisfaction with life starts to drop as early as a person's late 20s and does not begin to recover until well past 50, says Bert van Landeghem, an economist at Maastricht University in Belgium.
...
"From the mid-40s, people tend to become ever more cheerful and optimistic, perhaps reaching a maximum in their late 70s or 80s."
...
According to a study by the American National Academy of Sciences, based on a survey of 341,000 people, enjoyment of life begins an upward trend in the late 40s and does not peak until 85.

So by the sounds of things the late 30s and early 40s are the peak of one's angriosity, which is where I'm heading now. And there I was thinking it was just that I'm more aware of utter twats who won't fucking leave me alone than I used to be.