It depends how much effort, and how hard you work to make your sex life exciting. If you and your partner do the same thing every time, it will get really boring, really fast.
A couple can’t just do missionary every time. You both have to put in effort to switch it up too. If only one of you is putting in effort, both people will be let down.
Here are some ways to keep your sex life exciting (please note: not all of these suggestions are for everyone)
Toys: dildos, vibrators, cock rings, vibrating cock rings, butt plugs, anal beads, male anal toys (including prostate massagers, and strap on dildos), the butterfly or other remote control vibrators
Bondage: wrist and ankle restraints, gags, blindfolds
Sexual acts: anal sex, rimming, stripping, lap dances, male anal, sensual massage
Multiple partners
Other ideas: sex classes, costumes, role play, sex furniture