Its a good addiction, Jolana.
Well, up to a point.
It is generally said that you should not repot an orchid in bloom and further, you should wait to repot when you begin to see active root growth. Both are good "rules" to go by. Orchids can pout when repotted. I don't have a lot of choice when it comes to repotting though. With 600 orchids, and sizes ranging from tiny seedlings to mature, blooming-size plants, I am always repotting.