RE: Can 50/50 sheets get soft with washings?
Yes, but it might take more time than you have. i have some adult 50/50 sheets and pillowcases that are several years old and very smooth, nice to feel. I have a 100% cotton sheet with a high thread count that was a bit of a splurge for me, and it pilled up badly within a year, plus it has no body and just wrinkles up under you. In principle, I still think 100% cotton sheets are better, but in practice, I just do whatever strikes me at the moment.
Advice and commentary on living overseas
DD1 15, DD2 12, and DS 9