There is nothing odd about competition.
In a market-driven capitalist world, competition is necessary to decide who will get the most money. If making music is what earns you your money, there is no way avoiding to compete with others, directly or indirectly.
Another reason to compete is simply ego, being able to say "I am better than so-and-so".
One can be "better" in two ways: first, genuinely being better; second, degrading others to make oneself look better. Look at businesses, politicians, actors, athletes, artists, etc. for examples.
If something is only a hobby, then the only competition I personally accept is the competition with myself. I'd like to be able to do better than I am doing now. One can look at others as role models, for inspiration and motivation, and one can even be jealous, as long as it is channelled properly.
Search for "competition" in this forum, and you'll find some more threads where opinions are being discussed.