Roller shades, in my opinion, are the best window treatments you could get (they are my number one recommended window treatment - read my "Top 5 Best Window Treatments" blog here).
There are so many awesome styles of roller shades that anyone could get and transform their house/office/room. They also give your space a modern, elegant, easy, and relaxed feel (I can think of many other positive words to describe the roller shades effects on a room).
Besides having good styles and providing a nice feel, you can make them motorized and/or dual. If you decide to go motorized, you can have them roll up or down automatically at set times during the day to accommodate your daily routines. And going with dual roller shades you will have extreme privacy if you need it. I don't see a negative aspect of the roller shades.