It comes across that you almost feel like saying you're depressed would give you an excuse- and you don't want an excuse, in your eyes you're just a 'crap mum', and to you, that can't be fixed. I strongly believe that isn't true, but what I think and what other posters think doesn't really mean a lot to you in the place you're in at the moment.
I promise you there are loads of people that love their babies but still get bored to death with constant baby talk- I would love to have someone like you at my baby group to be honest!
If you were a friend, I would keep trying and trying to get you to talk to someone, professionally. Saying 'you can't love' suggests maybe deeper problems, but of course I do realise I don't know the first thing about you. From your posts, you come across as intelligent, open and very honest (which is incredibly refreshing tbh, especially when it comes to talking about not loving being a mum, which I don't think is talked about enough!) and yes, I'm sorry, depressed AT THE MOMENT, and I think talking to someone could, in the long term really help. There obviously isn't a quick fix, and I can see you thinking- the baby isn't going anywhere, the marriage isn't going to change, the job situation seems hopeless- so just been told to 'talk to someone' sounds so patronising - but it really really can help you to see things differently. And certainly can't hurt! Anyway, completely up to you what you do (obviously), but I really feel for you, and hope things start to get better for you soon x