Mums, what is the longest gap you would have from your last child to your next? I have a 12 yr-old. The gap seems way too big for me to have another baby now. Any opinion on this?

Mine is 6 years gap. I thought 6 years is already a big gap. But after reading all your comments.. wow.. I cannot believe that the gaps are so big for some. For me, it is very tiring to handle a newborn after you have rest for so long. Handling a new bub really consume lots of energy and time. Must have some self ready mode before launching the rocket. LOL