Introducing the second child to our family has nearly broken us! There are definitely the 'insta' moments where life looks great- if they have a hug, or are both sleeping or something!
Ours are 2 boys and just under 2 years apart.
95% of the behaviour issues we deal with daily from the 4 year old are due to his younger sibling. From the minute DC2 was born, DC1 was demanding attendion when I was breastfeeding or otherwise busy with baby - throwing, hitting, etc. DC1 is an absolute dream on his own, but put him with his younger brother and it's a nightmare.
Now dc2 is 2, he's turning into a demon as well!
We can not have 1 of anything or they fight over it. And I don't even mean just toys, I'm taking cutlery, blankets, empty boxes, anything! They will not share.
At one point, DH and I seriously suggested we'd be much happier splitting up and having each child 50/50 one at a time!
They are JUST staring to seem to be getting slightly better at ages 2 and 4.
I'm still happy we have two so close, mainly because I'm holding onto the hope that someday soon they will play together. The one thing that genuinely makes me feel a bit sad though is that it's very very rare I can do anything engaging with DC1 (4 year old) like get out crafts, drawing or play a game, because DC2 (2 year old) will come along and just destroy everything. We try to make as much time as we can, but again, it means planning ahead to split them up so that one of us can do engaging activities with the eldest, rather than spending the time all together as a family