You think he's concerned by such trivial things with upwards of $150,000,000 in the bank? He'll live off the interest alone!
The problem with this argument is, you are looking at this from your perspective basically based on what you have now. From a homeless person’s perspective, I might be filthy rich but does this mean I am happy where I am financially? No. In fact, what I noticed is that, every time I got a raise, some things that were in the “can’t afford it” bracket became “nice to have” and now they have moved to the “must haves” bracket. That’s how the wants and the needs go. If I am to retire now and adjust my lifestyle accordingly, then that will be one hell of an adjustment for me, since I got used to so many things and that’s only because I am still pretty young to retire. Once you grow older, your mindset changes along with it too and you gain new and different perspectives, so your needs might not be as big as they were when you were in your 30s/40s/50s etc.
I guess what I am really trying to say is that, Federer is on a whole different level name, fame and money-wise, so his needs are much bigger than ours and 2 million dollars may seem a lot to us, but to him, it may not mean more $50,000. It’s like comparing apples to oranges when we compare our perspectives to his as far as all those are concerned. Of course, this money he has should be enough for him to get by but we don’t exactly live in that sort of world. Andy, in fact, in later stages might be interested in making as much money as possible as well.