Have you taken everything into consideration.... Like, who is the primary child carer, it's all very well your husband saying lets have another one, if it's you that spends most of the time with the children...
I have 3 children, I had two very close together, there was a 14 month gap, and yes, it was nice to have them so close in age, but it was also difficult, trying to split my attention between 2 very young children.... a double pushchair!!! What a nightmare, VERY restrictive!! Two babies in nappies!!
And if you work, consider the cost of childcare for 2 children under 5!!!
Finding a babysitter that can cope!!!
That all said it is soooo lovely for them to have each other as company!!!
I left a 3 year gap between my youngest 2 and my 3 year old was quite jealous...
But I would love another 2 children, very close in age like the first two....
It's totally up to you guys to decide, just don't end up doing something you don't really want to, as you could end up with post natal depression...!!
Good Luck!