Why no pull starter?

My girlfriend just picked up a lightly used Sportsman 450. Its a nice quad. Needs a new battery, but no problem as we can just pull the rope to start it like all other Polaris sportsmans of the past. My new 570 has no such option. I plan to add a Deka battery to it as Im not trusting of the stock battery and don’t want to get stuck somewhere cause of a dead battery and no other option to start it. Why no pull starter?
Has anyone been stuck or stranded and what can be done to avoid this.
Maybe I will have to add jumper cables to my already jam packed storage box.