Why is it considered unIslamic if you don't want to get married (again)?

You know what, if ever I would find someone trustable and someone about whom I can be sure he wouldn't treat me nasty, I would choose a husband younger than me.

A younger husband would be kind towards me, never beat my face or whatever part of my body, never accuse me of things I didn't even do, etc. If everyone keeps harassing me just because I'm a divorcee, I'm going to marry someone younger. I don't care how many years younger he is.