I agree that a walk just after the rain, when the green glistens and shines, is the best time. However, it is also annoying for two reasons. One is that you get wet, especially if your footwear is unsuitable. I usually don’t, but sometimes you get caught out with holes in your old shoes. And you can’t really sit down anywhere if you don’t have waterproofs on. The other reason, (though that seems to be three now) is the dog prefers to eat the grass when it’s newly wet with the fresh rain and he’ll stop for ages to munch on it until I get him on the lead. And maybe that’s the reason why he’s in the garden just now.