Jon Hamm insists talk of him being a sex symbol is ''crazy''.

The 'Mad Men' actor is baffled by the attention he receives for his handsome looks, as there are also many people who thinks he looks ''old''.

He said: ''It's silly. First of all, it's completely arbitrary. Point me to 50 people online who think I'm super sexy, I'll point you to 50 more who say he's old and looks like my dad. It's not universal. If you buy into that, you're crazy.''

The 43-year-old actor will bid farewell to his 'Mad Men' alter ego Don Draper next year and he treasures every moment of his time on the show as he has learned a lot.

He told People magazine: ''It's been a long road. And it's coming to an end. But I can't express anything but the deepest gratitude for having worked on Mad Men. It's made me a better actor. And it's taught me how to deal with a lot of stuff in life in general.''

While Jon favours a quiet life with girlfriend Jennifer Westfeldt, he admits it is flattering to be recognised and complimented by fans.

He said: ''It's nice that people tell you, 'I like what you do.' A big portion of getting to the place [I've] gotten in my career is recognizing that there is a tremendous amount of good fortune and luck. You can never feel entitled.''