Two maths undergrads don't represent the whole community of maths undergrads. Replying on two peoples' opinions out of a sample of thousands is extremely statistically insignificant conclusion, so I suggest you ask some more people, look at some texts and then make your own decision. From my experience, Maths is not a lonely degree which makes you put in long long hours all day. Just work hard enough and you'll be fine.. most people don't attend lectures, slack off which you can't do with maths and hence make this sort of judgement.