I love my time alone.
I'm a happily married man and I have a good sex life with my wife. Besides all the traditional sexual things we do together, I really enjoy the occasional times my wife will let me simply look at her pussy and let me jack off. Usually, I will watch her masturbate with her favorite vibrator, a Jack Rabbit, then she will watch me, or we will do it together.
I have lots of time alone too when I am alone in hotel rooms, or in my home office when she is away at work. I probably spend an hour everyday at some point with my pants off, laying on a bed or sitting in a comfortable chair, allowing my dick to become fully hard and rigid, gently gliding my hand up and down my rigid shaft, totally lost in the wonderful feeling it gives me. I can edge myself for hours bringing myself almost to climax, then briefly stopping or slowing down, until the sensation of almost cumming passes, then I'll resume my slow delicious stroking. I can give myself the sensation of cumming for hours doing this.
I love to look at myself as I do it, sometimes leaning my dick outwards (because I get so hard it wants to stand straight up) so I can see my full length and thickness.
Another thing I've done that I like is to stand naked in front of a full length mirror looking at my body as I slowly jack off. I will get close to the mirror when I cum and shoot my gizz on the mirror. I have also sat in a chair beside a woman in another chair, both of us in front of the mirror masturbating and watching ourselves in the mirror. It is like watching two other people masturbating in a sense, and really exciting too.
My most favorite visual when I masturbate is a woman's pussy spread open in front of my face. She spreads her lips exposing her clit and love tunnel, and she slides her fingers in and out. That drives me over the top. Also, the hairier the pussy the better ... like my wife's. She is very hairy.
I wanted all the guys and gals reading here to know what I like to think about when I enjoy myself.