I wouldn't pick a specific year (1990, 1995, etc.) but rather the period between Aug. 1, 1991 and Aug. 1, 1992. In that span of time I got married (8/91) , got pregnant (9/91), bought our first house (12/91) and welcomed the birth of DD (6/92). My dad also beat prostate cancer during that time period and has had a clean bill of health ever since.
I'd have to say 08/99-08/00... that was my first son's first year of life. It was really special. Also I'd have to say, as a close second, 6/97-8/98... the year I lived in Aspen for 3 months, met dh, went to WDW where he proposed, and then got married in Veags. That was quite a year.
First place would have to go to 2000. That was the year we adopted DD and I finally became a mommy. After all the heartache DH and I went through to finally become parents I can't imagine any year would ever top that. A very close 2nd place would be 1994 when DH and I got married.
By far the best year of my life would be 1996. That was the year that I was pregnant (after 10 years of trying) and having my one and only child in June. I loved being pregnant, I loved giving birth and I loved the little bundle of joy that entered my life that year and has captured my heart ever since.
If I were to chose another year it would be 2004 because this year is wonderful, I have a wonderful husband, a wonderful child and I have lost 55 pounds and feel better than I have in years.
It was so hard to not pick a year during my childhood, because those times were so happy - but in the greater scheme of things, 1988 was the best. That year I escaped a horrible relationship and hooked up with my DH - he is definitely my soulmate.
The year I got married (94) should be, but 1997 was my best. Our first child was born in May, it was so exciting, hard, scary, wonderful and life changing, I loved every moment and can't imagine my life without him or our DD (born in 99 and with the exception of her birth, was the worst year of my life - save that for another thread).