It increases the attack surface for people to ask me to do things that aren't beneficial (or are even detrimental) to my life because they want help and I feel bad and sad sometimes if I don't help them. It's something I'm working to get better at.

edit: this is different from being intimidated into helping people. If someone threatens me I'm not going to help them. for example frequently people will come to me and ask for something I can do that they can't and I will want to help them and will then end up in a worse situation because of it.