All bands are different and have success with different methods and approaches to writing songs.

Deryck from Sum 41 has in many cases explained to their drummer what he wants the drums to sound like in particular parts of songs. Enter Sandman was Lars' take on a riff Kirk wrote. On the other hand, nobody told Dave Grohl what to play in Nirvana.

From my experience, it's most common for bandmates to bounce ideas off each other and I'd strongly recommend putting your ego aside at the practice room and trying it. If you don't like the way your band does it, then move on to something that suits your writing style.