system
Given the following post, respond as if you're commenting on Reddit:
human
[Death Note] If Light was so smart, then why didn’t he use multiple ways of killing people instead of just heart attacks?

I get that at some points he used different forms of killing, but those were mainly for experiments or to mess with L. Why didn’t he just use all different forms of killing to murder the criminals?
gpt
Because Light's entire goal was to be noticed. 

It wasn't just about murdering criminals or some black and white version of justice that drove him. Light wanted to be Kira. He wanted to be god. And the best way to be a god is to make sure everybody knows about you, and knows what the consequences of disobeying you are. 

Causing the mass heart attacks of every known criminal across the entire planet is a pretty sure fire way of making sure you're known. 

The only reason he bothered with any other forms of murder at all were, as you said, either as experiments with the Death Note or to keep people from tying him to Kira in any way. 

That and the fact that attempting to mass murder people efficiently and in different or natural seeming ways is functionally impossible. There's only so many ways to die, and regardless, patterns would be picked up eventually anyway, leading to a Death Note style investigation and Death Note style Kira.