Yep. Some boys (under 10,) are hard work, boisterous, noisy, and attention seeking, and girls (under 10,) are often a treat. The girls will sit reading and drawing and playing nicely, braiding their hair etc... I know a number of childminders and nannies who say they would rather look after girls than boys ANY day.
Fast forward a few years (to the teens,) and it switches.. Girls (some of them!) are bloody hard work, cheeky, and lazy, and rebellious. And they can be so mean to each other in school, and bitchy and catty. (As I said, not all but some...)
The teachers used to say for every spat they have involving boys, they have half a dozen involving girls. The bullying amongst girls is more sinister and insidious too, and more personal.
Once they get to late teens/uni age though, they are all past the 'bad' and 'awkward' phases, and are usually well balanced adults.
I do find though, (and many people I know say similar,) that daughters - once they are adults - stay closer to the parents than sons. I know a number of people with sons, and many have moved away, and they don't hear from them often. Many have moved close to where their wife or girlfriend's family live, and often see and socialise with the wife or girlfriend's family way more...
I would not like to be the mother of sons only. I'd be afraid I would more or less lose them, and rarely see the grandkids, and be second best all the time to the maternal grandparents.......
*disclaimer
These are just my views and opinions based on my own experiences, before the professionally offended get all up in arms and start ranting at me! 
