I can't conceive of a reason why they'd want to know how I "feel". Unless they're planning to use it against me somehow
Supporter here. How about because we want to understand you better, and try to make life easier for you? Your life experiences have taught you otherwise, I know that. But this is why we, people who care about you, want to know how you are feeling.
Some rubbish examples, but hopefully they explain a bit. My husband gets upset when his kids go home and it makes him sad to see the empty, tidy bedroom. I always used to open the bedroom door to let air through, but now I understand how it makes him feel I only air the room when he is out, and make sure the door is closed the rest of the time.
My stepson doesn't like the dark. I always used to turn off all the lights. Once I knew how he felt I bought him a nightlight for his room and I leave the landing light on when he stays.
On our honeymoon hubby and I took a sightseeing tour around the island we were staying on. Some of the roads are on the edges of steep drops. Once hubby explained that he didn't like heights the guide would stop and advise us to switch seats so he was away from the edge, which meant I got to see the awesome views and he could relax.
So if we know something makes you scared, upset, angry, or whatever negative emotion applies we will do our best to help you avoid or deal with these things. Or if we know something makes you relaxed or happy we will try to give this to you when we can.
If you don't know how you feel, obviously you can't tell us. This is where boundaries are good. If I can see something is bothering hubby I will ask him about it. But he has the absolute right to say he doesn't want to talk about it. That isn't an invitation for me to start throwing wild guesses at him, or badgering him to talk to me. I will leave him to his thoughts and go off and do something else. He will let me know when he is ready for company, and may or may not choose to talk about what was on his mind. Entirely his choice.
I do realise this is all easy for me to say. But it is true, I promise.