Most difficult things about three children?

[Morecoffeethanks]

I know this comes up a lot on here but those with three children what are the things that make it more difficult than two?
My children are 2.5 and 4 years old and life is getting a bit easier so I feel like me and DH are crazy for considering another.
What makes three more complicated than two.
Obviously the expense, which we have considered and we have a big enough car. Holidays we don’t tend to do all inclusive- more euro camp type things.
Do people with three feel like they have the time for all of them?

@MadridMadridMadrid this is a great point. We have a rental property in the UK that we intend to use the income from to support the children’s future but it’s definitely something to consider if it will be enough.

Aside from the obvious space/money, the hardest thing I’ve found (recently) is the club logistics!! Mine are 7, 4 and 2 and the two eldest do swimming and scouts, the littlest does ballet and it’s the brain mapping of who needs to take who where and when with what clothes on that I’ve found the struggle that nobody really mentioned to me. We muddle through and DH works shifts which helps hugely as he’s often around for pick ups and drop offs. Because I have more I am extra conscious I think of them not missing out on the extra curriculars. Also this hasn’t totally ruined us, as I am pregnant with number 4! Like you I was always set on that number so here we are.