Some people hate mares, and some love them. I'd put myself squarely in the "loves mares" camp, which is not to say that I don't love geldings too - my wonderful old horse Noble was a gelding, and of course so are Pie and Red.
But there's something special about a mare . . .
I've been riding quite a bit less for about the last week or so - my right knee has really been bothering me, perhaps due to all the work I've been doing on changing my right leg position - mainly opening my right hip when tracking right. At my age, if you change your normal body position, even minimally, things hurt until the body adjusts. My right knee sustained a serious injury when I was in my teens, and it can complain from time to time. Today it felt pretty good, so I rode a lot. So far so good . . .
Dawn and I had a lovely early morning ride. She was relaxed and soft, and we did some very nice canter work. She's in raging heat, but I wouldn't have known except that she was squealing and peeing in her stall last night (for Missy, no less - go figure) and again for the gelding in the pen nearby when I turned her out. I give a lot of credit to Mare Magic (or MareBerry - same thing), raspberry leaves, for helping Dawn be more comfortable when she's in heat - it used to be that I couldn't ride her or even pick her back feet when she was in heat.
Missy and I haven't ridden in the morning for a while. I brought her in, and she was calling and fidgeting and pawing, most un-Missy like. We saddled up and then did some leading work to be sure her mind was with me - she only screamed once when we were in the arena - all the mares in the pasture came running and calling up to the gate, led by Dawn. Once she settled down a little bit, we mounted up and had a very nice work session. It was my 40th ride on her, and she just gets better and better. Forward at walk and trot is now automatic, and her softness and transitions off my thought improve with each ride. When I turned her back out, she went over to the gelding in the pen and did a lot of peeing for him - she actually throws her tail over her back - might be a little bit of Arabian in there somewhere. She did very well for a mare in serious heat whose routine was changed - good Miss mare!
When you know a gelding really well, and spend a lot of time with him, he can become very bonded to you and also very interactive - Red is naturally this way, more mare like in a sense. Pie was very standoffish when I got him, but is now quite a communicator. But mares are so naturally expressive - both Dawn and Missy interact with me very directly, deeply and constantly. The bond with a mare can be very strong, but it's so important to accord them the dignity they deserve - they will trust you but only if you deserve it.