We are not saying it is normal not to have sex in a marriage.
Rather, even in a marriage, sex must be with consent (includes rape
roleplay). But if you think your wife cannot and refuse to satisfy
you, it is still wrong to rape her. You can of cos annul the
marriage or divorce her.
Turn the table around. If it is a woman complaining husband cant
and refuse to satisfy her in bed, you think it is right for her to
satisfy her appetite outside? No right? What she can do, after
exhausting all other means, is divorce.