system
Given the following post, respond as if you're commenting on Reddit:
human
Why can we effectively fight off bacteria but it seems like modern medicine can't help at all against viruses. Why are we still helpless against viruses?
gpt
Viruses and bacteria are inherently different things. Bacteria are simple prokaryotic organisms and with that come with a variety of ways you can destroy them (based on their cell wall type, etc.). Viruses are a little bit more tricky because they aren't "alive" in the traditional sense. They are a bundle of DNA/RNA in a protein capsid that utilize a host to propagate themselves. Depending on the type of virus, it can either be lytic and explode the cell with newly formed viruses (it utilizes the mechanisms that a cell would normally replicate itself while inherently destroying the cell) or be lysogenic and incorporate itself into the host genome for generations until it is ready to become lytic.

With this in mind, you can't simply destroy a virus in the same way you can bacteria because they are very different in composition. A lot of things that would destroy a virus would also destroy the proper functioning of a cell, so you'd have to find other mechanisms to fight it off (such as using an inactivated virus to teach your immune cells to recognize it and fight it off i.e. a vaccine).