...bloody fantastic!
The thing that made me do it was that I am in pain all the time, not at all helped by the fact that my 2 DSes are awful sleepers so I never get a rest.
We'd kept loads of baby/toddler clothes because DH wants a 3rd. I've ummed and ahhed for the last couple of years but I've now decided that my body just can't take anymore.
So I've got rid of 5 bin bags of clothes, plus various baby stuff like a breast pump, bottles etc.
Then our boiler needed replacing so we had to empty out our rather large cupboard of doom. So I found loads of other stuff to get rid of! Old suitcase, ancient sleeping bag (not used in over 15 years), 3 pairs of DH's trainers which were desintegrating (he usually hates decluttering but did agree that these could go), various blankets and so on.
I feel so much better and lighter now. And we have much needed space in our flat for hiding Christmas presents 
All we have to get rid of now are the cot , a toddler swing and a bed barrier (all currently dismantled and under a bed), but for those I need to ring someone to come and collect them.
I also feel free from the permanent questionning of having a third or not.
I love decluttering threads on MN and finally I have something to report 