For me i am using 2 ecosystem. So in this case i have the best of both world. Iphone mainly use for social like whatapps, facebook, browsing, banking, booking flight/movie/etc, gaming, photo and online shopping. Basicly ios i am more comfotable on the security and privacy matters.
While my android is mostly for entertainment which i use for downloaded movie/music, online movie watching, gaming, cctv (Stangely the xiaomi developer screw up the cctv application which until today did not fix it on ios), you tube, vpn, waze, google map, networking, remoting to pc and gaming. And for my kids entertainment. More flexibility, customizafion and freedom in android.
Both platforn had it pro and con and had over the years mature so much and so far touch wood i had not had many problem. Ios or android, i like them both so my choice is to have both. Peace!