I'm an only child and quite frankly after observing other people's families including squinney's I'm greatful for it.
I was raised pretty much alone until my mom finally shitcanned me and I went to live permanently with my Aunt and grandparents where I also had two older cousins. In my family love or no love, if you behaved in a way that the adults didn't like you were told so and invited to get the hell out or straighten up. This was my paternal family. I won't even mention my maternal family because they are not family, just mean spirited strangers.
Because I was imbedded with a family of mad sports fanatics and I was a musician with no interest in sports I was treated like a defective freak.
So I agree with squinney that outside of one's children i don't believe in unconditional love period and even with my children if they insisted on behaving in a dispespectful way, or stole from me, or otherwise put the rest of the family at risk or just made them miserable in general they'd have to go. If they were old enough of course.
I recently had a run in with one of my cubs who informed me that at 18 they were going to move out and I couldn't stop them. I informed this cub that he/she ( I don't want to mention particulars) was absolutely right, I couldn't stop them from moving out but i could damn sure stop them from moving back in, and advised them to think about it.
It's all straightened out now.