My husband loves in in lingerie or without it. It doesn't bother me, even though my body is not perfect.
As for your husband; had he been to the doctor to check for his Testosterone levels? My Man is more than 15 years older than he is and still has a voracious appetite for sex. Low T can effect a man in many ways, from his energy levels, to what appears to be depression, to his wanting to participate in things, to not caring about work and not wanting to have sex.
Healthy men should never lose appreciation for good sex (neither should women, for that point) and if they do, a doctor's appointment is a good idea. If his doctor won't take him seriously, he may need to see a urologist or an endocrinologist.
I have a female friend who is having a similar problem herself, (she has lost her sex drive) and she refuses to do anything about it. (She even has a prescription, based on her hormone level test. She says it's "too expensive" and that her husband will "just have to deal with it, he didn't marry me for sex, did he?" I have to only shake my head and think, "Yeah, at least in part he did. That's only normal.") I really worry about her relationship with her husband, because it is effecting him seriously. (My Man and he are good friends.) Few relationships can survive long stretches of sexual deserts.
He may feel better when he gets medical help.
Good luck.