Well, to put the thread to further use: Have any of you Older folks run out of ideas on what you want to eat? 
Let's face it, after 'years' of eating just about everything over and over again, (yes, that would include steak), you, or maybe just I, get brain lock when planning our next meal!?
"Please Dear ... Not 'another' steak night?" 
I love my ruts.
That was not said with enough emphasis. Ruts are kinda my bag. And it is no different in food.
I have several old stand-bys that I eat most of the time. And mostly I like that. Even eating out - You are far more likely to find me at one of my old haunts, rather than somewhere else, and I like that too. But I am no less susceptible to the same sort of stifling you are experiencing. These are the mitigating factors I have designed:
Firstly, one day a week is 'clean out the fridge' day, which usually is some sort of ad hoc stir fry, casserole, or soup, driven by whatever I need to get rid of before it spoils. That can be a very inventive experience, and sometimes creates something absolutely marvelous. Look at it as an opportunity rather than a mundane thing.
That one is kinda easy to accommodate, driven as it is by way of a needful regular act... The next two require an absolutely arbitrary trigger of some kind... Something out of your direct control...
Every time a hoot owl is sitting in my apple tree while I am out on the porch taking my late night tea, I must prepare a dish from the first food I hear (or see, read) mentioned thereafter, for the following night. This has to be a very serious attempt at a top notch dish, though it can be ad hoc, or taken from a
new recipe. Depending upon the rather arbitrary subject, it can be limited to a portion of the meal (chocolate, say, will likely become a dessert), but a full meal must be concocted, and it must be new. This happens roughly once or twice a month.
Every time a cherished friend or family member that has passed on is mentioned, in the direct telling of a tale from days gone by, I must prepare a nostalgic meal from my past the following night, in their memory and honor... This must be a favorite meal from my past, hopefully with some connection to the person remembered, that is not in my current menu... Note: This used to be a good trigger, but it is beginning to happen more often than is comfortable...
And finally, I am looking for yet another arbitrary trigger that will force me to go out to eat somewhere new or unusual... I am intending to work this into a date night thing, wherein I must find a female companion and find some place outside of my normal to take her to on the following weekend. I don't have that trigger figured out yet...
But anyway, you get the idea...