Why are some people obsessed with split push?

I don t get it why some people literally split push till our nexus is down. I know split push is good in some situations but I asked for baron several times and my support who was split pushing said: We don t need baron just push bot and top. How can some people ignore one of the most crucial thing in this game. Baron buffs are so op and so useful in many ways especially for high pressure. RIOT should really add a big tool tip about importance of Baron and some dragons over stuff like: "Did you know Ashe 's husband had 10 fingers?" /s.

I mean nobody is interested in that useless lore, I would like to see more useful tips in loading screen about mechanics stuff or macro, since there are so many players that really hate doing Baron, it feels like poor baron did something bad to them and they want to avoid Baron at any cost even with the price of a game. I keep losing those games when they refuse to do baron and the enemy team end up doing it and win.