Kidz: If we focus on the challenges of bringing up kids, no age gap is 'good'. There are pros & cons for every range of age gap. If they are 'too close', they are a handful when young, but they are also fantastic playmates! If they are 'too far apart', things may be easier to manage but it's like starting all over again, for each stage of their lives! Be it night feeds, toilet training, pre-schooling, primary school, secondary school, college, BGR... till they are really grown up.
Well, call me 'lucky' cos I've both! Gap between 1&2 is big (5yrs+) so it was 'reset' after 5.5yrs. Gap between 2&3 is small (18mths).. handful but in a way, it was just like an extension of #2's babyhood... I find everything very ez... in fact cos #2 is petite compares to her 2 sisters, #3 can wear #2's clothes soon as #2 outgrows them. I dun even have to pack & store away! & for some diapers, they can even wear the same size! & I'm looking forward to the period when they both drink the same formula milk... dun need to store diff types, just so convenient!