If it is more efficient, why does it cost more to heat my house with electric??? Electricity is needed to power things that is not practical to be powered by ICE or to power electronic devices.
If you do the loss calculations for creating electricity, delivering it to your home, battery charging, battery discharging, power loss between battery and electric motor an EV is not more efficient than an ICE vehicle!! Not to mention that making and disposing of batteries is extremely environmentally unfriendly.
ICE vehicles will eventually be replaced, but not with battery powered vehicles as we know them today.
Global warming is absolutely a real thing. There was also global warming during the dinosaur age. Were they driving too many ICE vehicles? NO, it is a natural occurrence. The earth is coming out of an ice age and there is nothing you can do about it. It can be slowed by using less energy, but we know that will never happen as humans will not give up modern living.