Why do doctors do this?

I'm going to be looking for a different sleep apnea doctor.  I'd sent my current sleep apnea doctor an email saying that I'd been suffering from fatigue (yep, it's still an issue), and that I'd like to at least get my machine checked and perhaps get a new sleep study, since I've lost 145 pounds in the past year.  Now, keep in mind this is Kaiser, so she has access to everything in my chart, and it's been a couple of weeks since I sent the email to her (in her defense, she was on vacation). 

She started off with "sometimes if you don't sleep well at night, it can lead to fatigue".  Right.  I've been dealing with sleep apnea for over 10 years now = when I say fatigue, I'm not talking a little "didn't sleep well, so I'm drowsy".  I'm talking sleeping 12 - 14 hours a day and still being tired.  Which she would know, if she'd look at my chart.  But that's not the big thing that frustrated me.  She closed with "I hope you have undertaken a daily exercise program, as that can be so important to weight loss".  What, 145 pounds in a year wasn't enough for you?  Second, you are not my general practitioner, you're not my nutritionist, you're not involved in my weight loss plan in any way.  Why do you feel it necessary to bring this up in a brief email? 

I've dealt with this all my adult life - going in to a doctor with the flu and having them bring up my weight, generally in a "did you know that weight can affect your immune system?" kind of way.  I suspect people who smoke get the same thing  - oh, you broke your ankle?  Did you know that smoking can decrease your healing potential?  We get it - we've got bad habits, you feel entitled to shame us for them.  But when I'm actively working to cure that bad habit, continuing to shame me is not acceptable.  Sorry, Dr. F, but I'm firing you.