Yes, it can be a real problem to be bored with one's spouse. It's a frequently voiced complaint that therapists hear from their clients. Fortunately, this condition can usually be easily fixed. Unfortunately, the source of the problem is generally in the last place that you want to look. That would be at yourself. Sometimes the very things that originally attracted us to our partner, those wonderful qualities of predictability or stability, or solidity or dependability or reliability they bring into our fragmented and tumultuous life in time become the source of our greatest irritation. What at one point in a relationship feels like security, at another feels oppressively boring. Your partner probably hasn't changed, and neither have you. Those qualities in him or her that you initially found so attractive are still there; it's just that they are less evident to you because your focus is on those aspects of your relationship that you find dissatisfying.
The bad news is that there will always be things about your partner that displease you. And if you're like most people, you have a belief (call it a fantasy) that if you were with someone else rather than him, someone more interesting, exciting, imaginative, passionate, creative, etc., you would be a happier. Not likely. If you had really wanted more adventure and stimulation in your life rather than the predictability that your partner brings you, you would have set your sights on that kind of a person. You didn't and my guess is that you didn't make a mistake in your choice of a partner. You, like most of us, chose the kind of person that would fulfill certain needs in your life, some conscious, some not so conscious, and no one, (except our fantasy lover) can fulfill all of our needs.
The good news is that you have the ability to change the quality of your experience with your partner even if he never becomes another Indiana Jones. The solution is two-fold:
It’s just possible that if you do some or all these things your relationship and your life in general will become less boring and more exhilarating. It might also become more challenging and stimulating. But who knows? You might get to enjoy living on the edge. And when your partner sees how much fun you’re having, he might decide to come along and join you.