I may be biased because I was a big Expos fan (yes, we existed... in small numbers) but I love the Olympique Stadium.
Although I understand that it put my fair city into a large debt, and continues to burden us financially due to numerous roof problems amongst others, there are some aspects of it that you can admire.
1. It is a beautiful building: How many buildings in the world do you know that look anything like it? Even with it's age, architecturally, it's one of my favorite buildings I've seen, including in my travels (the outside of it at least)
2. The memories: There were times when it was used for important events. I still remember going to baseball games with my father when I was young. I remember the first and last game of the Expos last season where the entire stadium was sold out. I've also heard of concerts by legendary bands Rolling Stones playing there. And even today, sporting events like the Under 20 FIFA World Cup and Montreal Alouettes games can be a great time and great memories for the future.
So next time, you throw more money at the city, remember, at least you have the memories (always think of the positives).