I love them, they are great at giving you flexibility, kids tow along and you know they’re safe, you stop somewhere and the child gets to have an independant ride, when they get tired, hook em back up.
They are a LOT easier to get through barriers and gates on cycle routes than the one wheeled trailer bikes
#1 son used to stand on the saddle and do ‘stunts’ 🙂
It’s all good, just make really sure its mounted properly, I’ve seen kids at silly sideways angles when their dad hasn’t done the bolts up properly.
They have good 2/h value too, I had one for 4 years and got most of my money back when I flogged it.