They have their uses — I went through a similar process as you did, and these days I take care to realize lazy sequences in most places (for example using `into

They have their uses — I went through a similar process as you did, and these days I take care to realize lazy sequences in most places (for example using `into` or `mapv` instead of map), mostly to get localized exceptions in case they happen. But I am also very happy to have lazy sequences when I need them (transducer pipelines with data that doesn't fit in memory). When you need them, you need them :-)