I was there too. I felt unloved at home, thought kids didn't give a damn about me and I was depressed. Suicide was my back up plan. If it came to it I had that option to end how I felt. Some days u was passive about it as in if I had an accident that wouldn't be so bad. On worse days I thought of writing to my family my goodbyes and thought about the practical things such as making sure our insurance paid off mortgage so W and kids not financially ruined by it.
I really do understand your feelings. Last year whilst still depressed I lost my dad to cancer. In the lead up to that I went home (abroad a few times mostly alone. One time home my dad took poorly, so I decided to change my return flights and stay a few days longer. My W got upset and said I had a family there that needed me too. At the time I thought she was very unsupportive, to say the least.
I got home and my youngest glued himself to me when I arrived. I was wrong (& my W was right). The boys did care about me and do need me. Being depressed affects perception.
Sorry to have been longwinded but I wanted you to believe that I truly understand and that regardless of how bad things seem, you are surely seeing it worse than it actually is. Plus when things are bad, they can only get better.
I still have down days, but suicide is now not an option. It never should be. I hope that you realise that. Best if luck.
R 25 years M 14 years S11 & S13 Working on it alone since Oct 2014 M in trouble a lot earlier (~2 years) Feb 2016. 1st R chat in a yr. Next R chat Aug'17 Still together