I have artificial grass in the back garden and we fucking love it.
To all the horror faced MNetters on here, I also have 2 front gardens plus a large side garden, all natural, none of it lawn, but planted up, plenty for the birds, bees, frogs, insects etc. My back garden has mature borders, I cannot keep up with the sheer amount of bird food that the visiting birds get through in a day, never mind the water bath they empty every day drinking and washing.
I have ants, bugs, spiders and worms etc all in the borders. It does not flood ever, in fact it dries much quicker than the grass previously did. I have two sons who previously wrecked my garden playing in it but the main reason we got it is because DH suffers from severe hay fever and couldn't be outside in the garden with our sons, couldn't sit out, enjoy the sun, a bbq etc so we laid it years ago.
@BG2015 we went to a place that has massive samples laid outside and we took off our shoes and walked on them, you can feel the difference with your feet more than your hands. It helps you feel the depth of the pile and ours has brown bits in it to look more real but I just wanted it to feel good and look okay.
It is a joy, no mowing, no strimming, no watering, ever. We just sweep the leaves off into the borders which are mulched, weed kill as a surface treatment. I think we started to look at it when it was featured at The Chelsea Flower Show.