Mathematics (during most of my schooling) was actually my main reason for living
!. I probably haved not loved anything in life like i loved mathematics. It was an experience, it was company, it was real, it was life (for me).
Maybe why i loved it so much, and was so good at it it (almost straight A's from primary-->high school, endless test/exam %'s in the 90s, many 100s), was probably due to the fact that my mind thinks in a maths/logical-type way (which could explain why people/socializing/feelings/etc were "completely unfathomable" to me!).
Maths (& almost all) schoolwork was in fact "play" for me, so never going out & having a social life did not barely matter to me, as i was doing what i loved, & what i felt was my purpose in life.
Also i developed an almost equal love for the subjects Physics, & to a slightly lesser extent Science, Biology, Technical Drawing, Accounting and Economics (probably due to the proportion of maths in them). I was so proud that i achieved the highest mark in the 6th-form end-of-year Physics test of 96% (& was highest in country i was told!).
Then after high school, i went to polytechnic, studying electronics & computer technology. (I recall a fond memory of feeling (temporarily) very satisfied with myself when the tutor announced that i was the single person to achieve 100% in a major exam!). So i transfered my love of maths into all of that stuff.
After my 2 years of polytechnic, and the 20 years since then, i have really just "mucked around" with life, finding/losing various jobs here-and-there, all the while in my spare time doing heaps of programming, which i still love to this day.
Have just re-read the title "If you don't like mathematics, why?" and realise that maybe i shouldnt have made my post, as i DO like mathematics!. Never mind, done now - i have presented the "other" side of the argument (lol)