

“esta superficie se siente rugosa”.
That’s a completely valid sentence, you can and do use sentir. However I think I understood what you meant, you meant that english uses feel as a verb to describe the action of touching things, not to describe how things feel to the touch. Gotcha.
A tientas is used as a descriptor when you are trying to feel something without light, yeah.
Also, I’m from Spain, you really don’t need to lecture me on how we talk 😅.
As a fisher male I never cry when angry or sad, but I cry a lot on tender films where people either recognise sacrifice or sacrifice themselves. You know, the tearjerkers. So, no problem with tears, they just don’t come out with anger or sadness.