About 1.5yrs ago my (33F) husband's (32m) three siblings decided they were each going to give $100/mo to their parents (66F and lower 60sM). My husband lost his job last May and stopped contributing the $100, and his unemployment payments ran out in December. We have been living off of my salary and he donates plasma, we share money and discuss all expenses but I have the final financial say (it was that way before as well, because I'm very good with money and he prefers me to take care of it). He was making about the same as me before so we've had to adjust our lifestyle a ton with our income being cut in half, but there are some fun things we still do, like we still travel occasionally because we have points for flights and we stay with friends for free.
Last night he got called to a family meeting where he found out his dad is leaving his mom, this has happened before a few times and they worked it out but this time it seems final. They own their house fully and his dad said he would be willing to sign it away to MIL for $25k, the house is worth a lot now as it's in a rapidly gentrifying neighborhood so this is wayyyy less than his half would be if they sold it.
My husband and his siblings got dinner after to discuss the situation and how they were going to help their mom, and during that conversation they got onto him about not contributing the monthly $100. They said it was a bad look that we are still going on trips. He explained that they are very cheap trips because we don't pay for flights or lodging and said he has no income. They basically said it should come out of my income then since we're a household.
He asked me if we could contribute the monthly $100 and I said not until he has a job and we stabilize. We squeak by but we are not in any position to have another monthly bill. He understood, as he always does.
Some additional context, my MIL is a lovely person and I also get along super well with his siblings. There is a bit of a cultural difference at play here, because I come from a culture where parents would rather die than take money from their children and in his culture it's common for children to financially support their parents. I love my MIL but I don't feel great knowing that we are her retirement plan to be honest, especially since we plan to have kids of our own soon and I would also like us to retire someday. It's $100 a month now but I know this monthly amount isn't going to be the end of it and it doesn't quite sit right with me, even outside of our current financial situation, but we'll cross that bridge when we get there.
TL;DR: Husband doesn't have a job. His siblings want us to continue give their mom $100 a month like we used to for both parents because we still travel and I told him we can't until he has a job.
I genuinely want to know the truth because I'm feeling weird about the whole thing, AITA for being the reason we are not currently contributing $100 a month to my in-law(s)?
EDIT: To address some frequent questions/points:
-It's pretty clear they do not plan on supporting their dad financially, he has been crappy in the way he has treated their mom so as far as I know, the monthly support in the future would be going to just mom.
-Mom plans to take out a loan for the 25k. Dad is asking for it in exchange for signing his rights away. The best solution would definitely be to pay the 25k first and get it in her name, and then sell the house and she gets all the proceeds. If she kept it the house would be later inherited by him and his siblings, but it makes more sense to all of them (and me) for mom to have the money while she's alive. But she does not seem to want to sell the house. We'll see what happens.
-Mom works at a chain tax-prep place, dad doesn't work. They are not disabled.
-The money started because sister found out parents got food from a food bank
-Husband absolutely does need to get a job, he has had some good interviews lately so hopefully he hears something positive back