Scaling problems are not unique to .Net, you have them with Rails, PHP and even C++. As long as you are able to measure where your bottlenecks are and address

Scaling problems are not unique to .Net, you have them with Rails, PHP and even C++. As long as you are able to measure where your bottlenecks are and address them you are fine. I had a ball working on these performance issues and tuning down render times for question/show to 50ms (a totally dynamic page). I guess not all developers get a kick out of the same things.