I think the the comments about Terri Irwin's looks etc. were over the top ugly and rude. She is very attractive and seems like a down to earth woman (who is still grieving). A lot of men do not find prissy, fake women attractive. They want a real woman, a person not afraid to of advenbture and a little dirt. Terri Irwin is that type of woman. I feel sure she rocked his world!
I read Steve and Me, and there were so many parts that showed how he adored that woman. Steve has been quoted many times on tv programs that Terri was the most beautiful girl he ever saw, and it was love at first sight. Shortly after Steve and Terri first met, they went out to dinner, and while eating, Terri dropped a piece of food onto her arm, and then proceded to eat it off her arm! Steve looked at her with aa look in his eye that Terri thought he was going to say something romantic, but he said, "you're sure not lady-like!" He loved her style! And she called him "hot in the cot" when they were on a TV show together. So to others, she may not appear feminine, but she was the right woman for him. I recommend reading the book, it's a BEAUTIFUL story, and you really get an insight on their love for each other and their love of animal conservation. She gave up her home and family in Oregon and a cougar conservation project to marry Steve. She said "his home is my home, my place is with Steve." (This is from the book.)
One thing that made me really cry was when Terri described how hard Steve worked, physical labor, chopping down trees, repairing their truck engines, etc, she would time to time see him go behind a tree to throw up from the physical stress. When she tried to get him to relax more, he'd blame the throwing up on having too much tea that morning.
Again I say, if you really want to know about them, read the book.

EDITED to add: Nutsy, thanks so much for all your info.