I have never had more than two. I the past when we had single dogs, I really didn't mind and I don't think their happiness was over comprimised.

Due to the cost of food/insurance these days it would put me off having two dogs again, unless I could really afford it (as I have a horse too).

Mias face came up in a site we were fundraising for, she was in the pound and going to be pts
everyone said how much she looked like Ben
I couldnt bear the thought of her dying so I offered to foster her
and I failed my fostering