There is a particular joy I get about once a year (usually) that is rather odd but nice nonetheless.
I have bad eyesight. Weak eyes, as they might have been called in ages past. Thus, I wear glasses. However, my eyes continue to degrade, so I continue to need newer prescriptions. I probably need a new pair of glasses every 9ish months, but with insurance, I get one every year (or less, if I don't happen to have eye insurance). This disconnect means that I start noticing that my eyesight is bad for a significant period of time before I get new glasses.
The time has come for me to schedule an appointment with my eye-doc (alas, "optometrist," you are a quarter-word where a nickel-phrase suffices!). While I dislike that my eyes suck, I find myself actually looking forward to those sweet hours after I get a new pair of glasses. I am always amazed at how crisp and clear the world can be. I recognize that my eyesight without the new glasses is poor, but each and every time having my sight restored to perfect makes me smile uncontrollably.
Of course this doesn't last long. A few hours, and then for the next week or so I'll randomly be happy about it, but over time it gets to be the norm and I stop thinking about it.
Thus it is actually sort of nice to have bad eyesight, if only for the wonderful joy of having my eyesight restored. If I always had 20/20, then I would be barred from this pleasure.
Also, David Tennant. Sorry Matt Smith. I really like your capabilities as a sweet, caring Doctor, but you have yet to do anything that seems to qualify as being "like fire and ice and rage... like the night, and the storm in the heart of the sun... ancient and forever."