Why is it that mothers... ?

Are obligated to put up with a father who doesn’t want to be consistent in their child’s life ?

My sons dad basically has little to do with our son and often blames it on me. I admit after 2 long years I’ve gotten to a point I’m like why should I continue to torture myself trying to keep him involved when in all truth he doesn’t want to be. It’s toxic for my son and I don’t want it around us. He tells me he wants to be cool and coparent but a day later it’s like another person is talking to me. It’s a continuous cycle and hurts so much that I keep falling for it thinking something will come out of it.

Since we’ve broken up him, his girlfriend and his mom would harass me. Walk all over me and take advantage but they only do this when I’m trying to be strong and keep all the drama out of our life. They don’t have my phone number, I deleted all social media and have vowed that I will do what I must to keep toxic people from intruding.

I find that when I’m asking for their help or need something they’re no where to be found but as soon as I pull away they’re calling my job, contacting my family members keeping tabs on me, threatening to take me to court. I’m just tired of it already

I feel bad for depriving my son from having the opportunity to be around his family but they don’t even treat him like he’s their family, also don’t want my baby beating himself up about it later in life why he’s treated the way he is.

What can I do better as a mom ? For my sons sake