Every second dog round here is a Cockapoo, and I can't say I find this - the majority are nice dogs in pretty colours, and with sensible owners who have put the effort in to training them. I am a dyed-in-the-wool pedigree dog person, but I have to say I entirely see the appeal.
The grooming should not be underestimated - yes, they are clipped, but you need to keep them right between clips - and they can be very needy and prone to separation anxiety without a doubt.
My main issue with them though is that when you talk to owners, it is apparent that the vast majority have been bought from farmed situations fronted by lies, slick marketing and websites. Many/most of their parents will have spent their lives in dark barns, with little human contact and none of it kind.
The chances of finding a responsibly bred one are so slim in comparison with their numbers. Unless I personally knew the person who had bred the litter, from parents with appropriate health testing, I wouldn't dare buy one.
(As an aside, if a dog is poorly bred, you are never 'rescuing' them by buying them - you are just perpetuating the industry and consigning more to the same fate.)
If I were looking for a family dog, with children of sensible ages, I would probably look at the Miniature Schnauzer. Again, they are popular, so you need to be careful where you buy them, but it is easier to scope out decent breeders when you can look at proper records. Can also be a bit needy, but a well-bred one is a delight.