Having just experienced this first hand: you need to treat your room.
To be more accurate, you need to know how to determine AND hear HOW your room is coloring altering or outright changing sound, sound stage, frequencies, etc. This should be a testing process that people go thru when setting up their components and their speakers in their listening area.
I went thru this with my step father, who has been an audiophile my whole life. His incredible system and amazing top notch speakers literally sounded AND measured horribly in the room he had set up. To him though, it sounded amazing and never heard anything better. To me, it was literally unlistenable....and oddly to him, it was unlistenable as well he just didn't realize it (never listens above 65db, only listened for an hour or two).