Yes I had mixed feelings. Trial by Jury is pretty fundamental to the justice system and I’d have liked to experience it for myself, if only it didn’t involve a horrible commute with no public transport.
I think selection is meant to be completely random, as long as you meet the criteria. If you’ve a good excuse such as a pre-booked holiday you might be allowed to defer it, but then you are no longer random - you can definitely expect another letter quite soon. After serving you return to the ‘random pool’ so it’s statistically possible to get summonsed multiple times in your life, and that does happen.
I got completely let off this year at their own discretion, but my chances of being summonsed again next year, or even next week, are now the same as anybody else’s. And I shouldn’t tempt fate by gloating as the horrible commute would be even more horrible in winter.