I had an internship where we worked with C# and .NET, and recently i inherited and application written on this stack. I would say I much rather would develop in Rails.

Why?

Currently, I don't have a ton of time to maintain the app and I was hoping to migrate it off of aws (since I don't have a ton of aws experience and mostly don't want to mess with it/ manage it) so I was looking to deploy on heroku which doesn't support C# as of now. - https://help.heroku.com/PAT3YEDU/does-heroku-support-net-app...

If you get past my gripe, I think it's much harder for new developer to pick up.

I think Ruby/Rails and Python/Django were created specifically for developer happiness and ease respectively.

I don't think it's going to be easy to manage this asp app (even though it isn't a large code base) Simply due to the fact that there is a lot of stuff I feel like I'll need to catch up on. When I look at other apps written for the web I find them to be "easier", whatever that means.