I'm thin too and the difference between a 17" and 18" seat is huge to me. Especially if somebody larger is next to me.
So, you hated the A319s and A320s, too, before Delta put wider seats on them?
http://web.archive.org/web/200310090...00/index.shtml
The 757s? All the DC-9s? The 747-200s?
You must have liked 767s with their 18 inch seats in coach vs. the 17.5" seats NW installed on the A333, then?
http://web.archive.org/web/200310020...30/index.shtml
When people complain about everything and nothing their statements quickly get discounted.