In my twenties, I was, shall we say, well endowed with heavy balls. Running for a bus was painful so I adopted briefs, welcoming their support. I also liked the way my frequent erections were held upwards against my stomach and I could surreptitiously rub the shaft while the shaft slid under the elastic. I liked the full sized briefs that go well up round the waist, not hipster models.
Recently, because of the very hot weather, some 53 years after wearing briefs non-stop, I bought some boxers. As my elderly balls are now smaller and I'm past running for buses, the original reason for the briefs no longer existed. I was surprised at how comfortable I felt. The freedom of my cock and its' rubbing on the light cotton cloth was arousing. I was pleased with the tenting and the way I could grab it and even start my wanks before removing my boxers. I would say they have even become somewhat erotic and my masturbating life has improved since the change, even for an old man. Just writing this, I can feel the tent has a pole in it!
Maybe a change is good for a boost in one's solo touch.