[..] and they reply saying 'It sounds interesting, but I don't have time for it unfortunately.' Thereby implying that you are lazy, and they are busy. Don't a

[..] and they reply saying 'It sounds interesting, but I don't have time for it unfortunately.' Thereby implying that you are lazy, and they are busy. Don't assume they're implying you're lazy, it could very well be a way of telling you that they don't find it that interesting without being rude. Besides, what's wrong with having different interests? Isn't it normal that one person finds something more interesting than the other, and therefore is willing to spend more of his spare time on it? That doesn't imply one is more lazy than the other, that just means they have different passions.