I think the question should be this:  Why should somebody not join the SDA? That list would be short.  

Being a member of the SDA is important because I'm not good at speaking up so I need assitance to help negotiate on my behalf.  

When people join together and be part of the union we are helping each other have support and rules for work, I dont want to be the one standing alone!  

It's the protection of your job, it makes sense to be protected  

I think the question should be this:  Why should somebody not join the SDA? That list would be short.  

Being a member of the SDA is important because I'm not good at speaking up so I need assitance to help negotiate on my behalf.  

When people join together and be part of the union we are helping each other have support and rules for work, I dont want to be the one standing alone!  

It's the protection of your job, it makes sense to be protected