I'm going to borrow the response: "Well, that's just my personality!" I was listening to NPR interview a young woman who had just lost her job. It reminds me that, for example, if I tell someone "My house just burned down" I'll frequently get a stupid response like: "well, you seem upbeat"
Most people aren't really listening to the content of what we say which leads to ridiculous responses like "well, you seem upbeat" So, when the young woman, the interviewee responded that it's just her personality I thought that is such a perfect response.
I mean just because a person is going through a loss and not openly crying doesn't mean it doesn't hurt!