Sorry, been working nights and just got home :)
Thank you so much for your replies, everyone. I know It's a 'first world' problem of every description.
errolthedragon good point. Very true.
maitland good idea-sadly enough I've spent so long thinking about others I am not even sure what I want but the particular sort of bed I want is one thing, so good idea.
shoptattsyrup Thank you. My Mum has actually suggested that herself (buy some really good quality, sturdy, classic second hand furniture).Thank you for the well wishes.
alcalavicci that is a good idea, thank you.
That dining set is lovely.
Marmite yes, I am beginning to come around to their point of view now.
Jesstann thank you for the flowers and wine
I get it now. Having never been a parent maybe I just didn't understand.
I'm gay and in the North East, but do tell him I wish him well
And thank you for the luck.
pixxie I'm with you-and you know despite not being a parent I've played a part in raising my ex's children and I felt the same then.
frownette to be fair I didn't specify my sexuality!
moving Thank you. I've not got a single YABU so I am reconsidering definitely.
lunalula I am extremely grateful for them in so many ways, and I just feel a bit humble about this. They have done quite enough, more than many parents would and I really do not think I have been rude-I've explained what I feel like to my Mum that I just don't want to take anything from them. I'm not sure what 'wet' means, is that a colloquilism?
Billybag it does feel like a huge step forward. My Dad is a perfectionist, he likes to work on things and he's a (retired but very skilled) carpenter. So yes, I will talk to him about it. :)
thingsdoget I think we have the same Mum
That's such a lovely account of your Mum, thank you for sharing :)
procrastination thank you for standing up for me-I can see why people may feel that way especially as I feel, well I know what MN is like about 'stealth boasts' and I hoped I wouldn't be seen as doing that.
newname true-I need to shift my mindset to that instead of looking at it and thinking 'I'm still relying on Mummy and Daddy 'cause I cocked my life up. Any tips 
beela yes, I hear you on that. I am sure I would be the same, on reflection.
teenage that is a great idea, thank you. A wardrobe to me is just a box to put clothes in. I wouldn't want an ugly one, of course but maybe I'll have a think about what I may really like for the house, and have them buy that. I will do that. It's going to be my first 'me' home :)
I guess I always feel like I owe someone something if they do something like this for me. I feel I really shouldn't 'need' their financial support now, I am an adult, not even a young one.
That probably or likely is a product of my being the 'underdog' in toxic relationships for a long time.
I am also coming from a position where I feel my daft life choices have made me in this position where I don't have as much money as I could have had, despite their support as a young woman (they paid me through university but I never managed to do anything with the education)so It's my fault, not theirs and their money is for them, not for me.
But I am seeing the other side now, and I understand it. Very grateful, and thanks again for all the well wishes, really appreciated. :)