[onion2k]

The problem here is that you think you're giving people advice when really you're just telling them what to do. The difference is that advice comes with kindness, compassion, an understanding of how the advice is affected by someone's situation and context, and deep knowledge of the subject you're advising about.

Equating changes to diet for weight reduction to quitting cigarettes shows you probably don't have that.

[eric_cc]

How does the poster comparing two difficult life changes indicate a lack of compassion?

[brokenmachine]

He's telling them what will actually work, not simply what to do.

Eat more than your base calories and you will be fat. Smoke and you will be unhealthy.

Reality can't be expected to be kind, compassionate and understanding.

It's simply reality, and that's the way it is.