No, this is not a joke. Today I am talking about first-person narration, hence "I."
I have less experience writing fiction in first-person than I do third, but I do write a good bit of it. In fact, I wrote five first-person flash fics (four of them drabbles) in the span of a few days in early March. You start to build momentum when you write in the POV for a while. Perhaps it's because rather than resetting with a different character name each time you start a new story, you always use "I" when writing in first-person.
The danger in writing in first-person is that you have to make sure your characters in different stories have different personalities. If you get used to "I" being a humorous type it may prove difficult to write a sobering "I." So far I've been lucky. The only attribute in common with the narrators from that batch of five stories I mentioned above is a bare sense of youthfulness. Differences in age, gender, profession, and genre helped a lot. If you're writing similar stories about similar characters in the first-person, beware. You probably don't want to turn into a one-trick pony with narrators.
The largest advantage to writing in first is that you can inject personality into your narrator more easily than in third. See, it's a two-faced coin. Personality can lead you either way. But as long as you're careful, your first-person narrators can become some of the most entertaining and solid characters out there.
I try to stick with third-person most of the time, but if the story needs to be told by "I" I let "I" tell it. Don't limit yourself to one or the other. In fact, I recommend writing both in copious amounts. If you'd like to specialize, even a 90/10 split can help your writing.
Because each POV has its advantages and its disadvantages, you can learn how to write certain things better by writing in a POV that handles those things better. For example, if you feel like your third-limited protagonists are too impersonal, write a few first-person stories with quirky personalities and then go back to writing limited. You may very well be happy with the difference you see.