system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] Has Batman ever genetically modified himself?

If not, why doesn't he invest any money into enhancing himself genetically through some sort of super serum?

Alternatively why doesn't he create his own 'clean' venom?
gpt
Short answer? No, not in any meaningful way. He's trained his body to physical perfection and sharpened his mind to incredible levels. He is the upper echelon of what us humanly possible in the DC world. 

There have been times when he has augmented himself like when he had to use Bane's venom or in Injustice when he helped develop the super pill. However he has never permanently altered himself. 

He's a symbol not just a man. Sure he could go out and make himself strong enough to go toe to toe with the big blue boy scout but then he wouldn't be the Dark Knight anymore, he wouldn't be the world's greatest detective, he wouldn't be the "average Joe" of the Justice League. He'd be superman in black. 

Being Batman is about being human in the face of gods among many many other things. Making himself unnaturally powerful when he didn't need to would be a serious breach of his code.