I'm not an adopter (maybe in the future) but I am a foster carer and had 2 boys aged 5 and 6 placed with me last summer who are still with me.
I was a teacher before fostering, so was used to dealing with classes of children. However, nothing prepared me for how physically exhausting I would find having 2 children constantly around! For the first couple of months I would start the bedtime routine about 7pm, leave the bedroom about 8 then go straight into mine and fall asleep! Initially they were waking about 5.30 but that has settled to 7 most days (sometimes I have to wake them up at 8 for school but that never happens on weekends!) and they will also now play for a little while in the bedroom in the mornings so I don't have to be up quite so early which helps. I need sleep!
I had never realised how much I like time on my own, and my own space, until the boys came. Previously I had loved having cuddles etc with relatives' children but suddenly having 2 children needing to constantly touch me and sit on my lap was a bit trying! Don't get me wrong, I love that they are so affectionate but sometimes I want to scream 'get off me!' when they are grabbing me round the neck for a kiss and pulling my hair, or digging their elbows and feet in me as they try and get comfy on my knee!
I can remember cracking once, about 6 weeks in, halfway through the summer holidays. I'd put them to bed but had had to get a bit cross about low level naughty behaviour. When I told my husband he jokingly said 'they're always good for me when I put them to bed.' Which by then he'd probably done twice! Anyway, that was it, I ranted about how he was better than me, I wasn't good enough, I couldn't do it, I was soooo tired etc. He told me I was doing great and sent me to bed. I think the problem had been that I'd been out with friends the night before and got in about 11 and just couldn't cope with such a late night at that stage! I went out again a couple of weeks ago and really noticed the difference - I wasn't totally exhausted the next day!
I do still have days when I wish I didn't have to go out on the school run, or I wish I could have a lazy weekend doing nothing instead of going to parks and soft play areas, but I don't regret going in for it and I love the boys dearly. That said, I sometimes feel I am not properly 'enjoying' them as I constantly feel a little stressed. I worry about things like I'm not playing with them enough, I should have got their reading up to a higher standard by now, I let them watch too much TV, I didn't deal with certain behaviour in the right way etc etc! I'm hoping that as time goes on I will relax more with the boys and any future children that come along. Good luck 