system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] Why doesn't Bane fix his perpetually-obvious weakness?

Most if not all incarnations of Bane show him with hoses and pumps attached to him which deliver Venom into his system, and most if not all incarnations of Bane show him getting his ass handed to him after Batman slices through those hoses or short-circuits those pumps. 

After all this time, why doesn't Bane wise up? Conceal the hardware under a layer of body armor, for example. Get a delivery suit similar to Mister Freeze's refrigeration suit which keeps him bathed in Venom and multiplies his strength. Hell, implant all of the hardware inside his body; we know the comic universe has some badass medical tech available.
gpt
Canonwise, Bane's kicked his addiction to Venom while still managing to be slightly more physically powerful than the Batman, purely through good old fashioned hard work and training.

If he were to still consistently be on Venom, there would still be issues. Body armour would be bulky and restrict movement, a problem that would only be exacerbated by his expanding musculature when he's actually on Venom.

There would in all likelihood be negative side effects of constantly bathing/exposing his body to Venom. And again, the expanding muscles would make a rigid exo-suit difficult to use.

Implanting hardware inside the body would be difficult, due to the fact that placing tanks, tubes, and machines beneath the skin, next to muscles, organs, etc., would likely impede natural body movement patterns. Can't be easy walking around with artificial objects inserted literally everywhere inside one's body, let alone fighting.