I contribute to Wikipedia since 2006[1] by adding, and seldom reverting (hence low edit count, but still >6K[2]).
I am mostly contributing to science and musical articles, although my interests are broad and change over time. I am currently more invested in Wikiversity, as it provides a great complementary platform with a different philosophy, allowing the introduction of scientific concepts via practical tutorials. I am often at WT:MED and I support WP:RETENTION.
My editing methodology is as follows: searching for high quality sources, read them, and then use them to write entries in a WP:BRD fashion. I edit Wikipedia as I would do a state-of-the-art literature review, so Wikipedia is a by-product of my own research but it allows me to follow a strict methodology, and that's very nice! I try to be a true (bayesian) skeptic and avoid pseudoskepticism.
If you disagree with my edits, it means either I am wrong, or you are wrong, or we're both wrong, or we're both correct and we don't know it 
. I never edit entries pertaining to my job or my interests (apart from curiosity 
) to reduce bias. I will always be open to discussion to resolve these kinds of issues, so please feel free to reach to me (if I do not do it first). If nothing else works, please see what to do next in WP:DISPUTE. I comply foremost with WP:BRD, WP:PRESERVE and Wikipedia:Revert_only_when_necessary. I do my best to stick to WP:Wikilove, but highly dislike WP:BRR, WP:TENDENTIOUS, WP:ESDONTS, WP:BRD-NOT and WP:POVRAILROAD.
My own rules of behavior:
- Rule 1: stick to WP:WikiLove, always remember the goal is to make better articles, no matter the hardships.
- Rule 2: always avoid discussing when fatigued.
- Rule 3: always follow Rules 1 & 2!
It seems my main abilities are in finding reliable scientific sources, and adding/revising content, as shown in xTools authorship of most articles I edit[3][4][5][6][7][8][9][10][11][12][13][14][15][16]. That is not to say that deletionism is useless, of course it's necessary, like it's necessary for the brain to trim minor memories out to leave room for more significant ones, it's just not where I (and my brain) are good at doing
(Sorry, no fancy boxes here, I am not fond of personality traits categories... But if you really want one, I think I might be a Wikipedia:WikiDragon)