Should i buy the wife a vibrator?

we`ve been married 14 yrs,i love her ,i really do.She loves it in most all positions but it`s slowed down heaps in the last 5 years,i love to spoil her but she`s not a romantic,she`s given us 5 wonderful and even that can change how you feel about down there i know,i do everything i can to show her how y she still is to me.But i wonder sometimes because she`s so shy,do i give her enough and would a vibrator be a good thing or bad thing for our relationship,yes she comes even in multiple but it`s only when she wants to make love,Am i just a vessel.do most married couples male or female close their eyes when making love after fifteen years,no newly weds please.But make no mistake we do have fun together and our kids mean the world to us.So basiclly what i`m asking is,will a vibrator divid us in the bedroom or open us both up,thanx