Yes and no.
I had a bit of an unpleasant split and drew a very firm line in the sand from the start that I would never ever do the whole "still spend time together" thing - our lives were separate now and we'd behave as such. I've seen others do it with the best of intentions and most of the time everyone had a shit and tense day out.
The arrangement with exH and I works well and the kids are (mostly) fine. I don't have to do the wife admin still, or organise days out, or check in with anyone, or work round anybody else. Everyone knows where they stand. He does my thing and I do mine.
I think the place you're in now, days out together may seem like a lovely idea but the reality is even amicable divorces have tinges of unpleasantness and, to be frank, why would you want to put yourself through being around your ex all the time? When would the days out end? And what happens when (not if) one of you meets someone new? Not many people are willing to jolly along on days out with their new girlfriend/boyfriends ex.
Plus it's confusing for the kids. One thing I was mindful of, DS was only 2 but DD was 6 when we split, and rightly or wrong at least for a while every child wants their parents to get back together. DD did. And Jolly hockey sticks days out doesn't quite send the right message that 'we are split up and that won't be changing'.
However, I have to say it would be nice to get along and share views about how to raise the children and be on the same page with exH. But for many reasons that isn't going to happen and my DC come home from their dads with some very interesting things to say about what they did, what he told them etc. For example, DS is now 5 and a very sensitive boy and exH constantly tells him to 'man up' and 'boys don't cry/get upset' 
whereas I'd be the opposite and telling him it to hide his emotions. you can see how it didn't work out between us!
It would be amazing if exH and I shared the same beliefs and values on how to raise children so if you can both ace that, more power to you!