What are you talking about?
If you didn't have to deal with environmental hazards in your dnd games, you didn't have your dm use all of their tools
Let me give you a great example: https://www.dndbeyond.com/spells/grease
In previous versions of the game this spell would set on fire. They specifically removed that in 5E on purpose. They did that for a reason. Also I'm not against hazards. I'm just against ridiculous amounts of hazards. This game breaks immersion with the amount of nonsense going on.