I think a lot of comedians are this way, and it makes sense. Most of us have a “work persona” that is not exactly the same as what we would consider our “real” personality.
For a more genuine version Will Ferrell, and just a hell of a story of friendship and overcoming challenges, I heartily recommend the documentary Will & Harper.
My family was super meat-centric for all holidays except Thanksgiving and Christmas.
Any meal where it’s physically possible to barbecue, we would. And a family barbecue meant hamburgers, hot dogs, chicken, pork steaks, and beef steaks – one of each per person, plus a couple of extras. Sides were German-style slaw and potato salad. Buns were not included, but my grandma would always put a stack of white bread on the table (she was the only person who ever ate it).
When I started dating my husband and took him to a family holiday, he was shocked by the fact that my whole family was eating hamburgers and hot dogs with flatware instead of on buns. And he was actually sad at the lack of side dishes.
When I went to one of his family barbecues, I was sad that there was just one hamburger per person (already on a soggy bun) and a ton of weird casseroles.
I don’t necessarily buy him as a serious actor. Mad Men was so well written that I think almost anyone could have been an effective Don Draper. My opinion is that he pulled off about 90% of that role based on his looks. (I think it worked overall because there were so many very talented actors surrounding him.)
That said, I love him as a comedic actor. His SNL appearances are delightful, and I’m always pleasantly surprised when he shows up in comedy shows and films.