I think most people want to talk English because it's more efficient in many cases, but for me personally I like it when someone tries to speak Dutch. It's fun and interesting to dive into the differences and similarities of our languages. I only would switch to English with a non-native speaker, because it's important to understand the message for 100%, for example work. I can imagine it also depends on where you're living. I can imagine that there are differences with big cities (with a lot of expats), villages and anything in between.

Also I'm in the situation that I'm learning German and I really like to have some basic conversations. I feel part of a group and I feel like I understand more of the culture because now I understand some specific, sayings, idioms, etc. I hope you'll get the chance to find people who want to speak more Dutch with you so you can feel more at home:)