Do I have to give SIL all my baby stuff?

[Lilipolpo]

All our baby stuff came from my sister, who doesn’t need it back, now SIL is pregnant.
SIL and BIL are alright but we’re not close. Doubt they’d even say thank you. When I got the stuff off my sister I put some money in nephew’s bank for his future to acknowledge they saved us so much money. SIL and BIL wouldn’t even think of that I’m sure!
So, feel free to call me a selfish cow, AIBU to resent giving them all this stuff?

Put it in the loft. Tell them you sold it on eBay.

Thanks everyone, been really interested to read the responses!
No, nothing has been explicitly asked for but i am sure being the family they are they would expect me to pass the stuff along, they won’t want to fork out on new stuff and know I have it. And they know I was given it too!
To everyone who said of course I should spread the love and pass it on, I just wish I felt that generosity and I am saddened by my own personality that I do have these feelings of resentment. Yes, as noted, although there’s no scandalous back story, the reason I’m reluctant is because I find SIL quite cold and unfriendly. If it was about giving stuff to my own sister I’d be thrilled to do it.
I should probably be mature and offer to LEND some things, though mindful that I might not get them back. And not expect endless thanks or money or anything.
I won’t give the best clothes or blankets, but the baby bath and play mat and jumperoo... well I’ll offer. In the name of self improvement.

Aw well done OP. And your last post is very gracious so I think there's hope for you yet!

One thing I like about getting things second hand and passing them on is getting one over on the man. I really hated the fact people saw my precious babies as a marketing opportunity. So even if your sil benefits "unfairly", so does the planet!

I really don't understand what your problem is, OP. if you're no longer using it then why not give it to them?

No no and thrice no from me. What if you both get pregnant again at the same time? Bet she keeps it all and you’d have to buy new or get second hand from somewhere else.

Be assertive and say it’s not possible it’s not mine to give, sorry about that. Subject closed. Repeat as necessary. No chance would I be giving a jumperoo to my SIL (who is also an entitled sort).

NC fail OP.

She might not even want it

Bit harsh, just look at all the replies, there are plenty of people who have confirmed they wouldn’t give up stuff automatically.

Claire 90ftm harsh I mean

I only give stuff away if I never want to see it again , keep the stuff for when you need it yourself .

As someone who has been lucky enough to benefit from DC having older cousins, I'd be horrified to find anything had been passed on this grudgingly and I'd most certainly never accept anything again.

I once gave a ton of baby clothes to a neighbour.. an 80 liter sack full. It was a terrible winter and they were damp after I had washed them all so I told her this and said they would need to come out of the bag to dry or they would go mouldy.

So you presented a neighbour with a big sack of damp clothes (did she even want them?) that would create a whole lot of extra work for her (trying to dry them during a 'terrible winter'), and if she didn't have time to deal with them, would stink up her home going mouldy, and then were all put out that she wasn't effusive enough in her thanks? Seriously?

Be honest now, were you actually trying to help her, or were you just waiting for a big display of gratitude at your amazing generosity?

How is what Claire90ftm posted even remotely harsh, OP? It was merely a question.