I made a Tempeh Reuben from a recipe I found in two places the other night and served it with a side salad and a glass of red wine. One step, draining the sauerkraut, was suggested in the other recipe, and I found it really helped with this one. As usual my husband and I dined in the kitchen with the candles lit. It was a delightful meal and the sandwich was really delicious. My husband took one bite and was very surprised that he was finding it tasting so good.
When I first started this type of eating lifestyle, my husband balked and just shook his head and said "well, just make it taste good". I think I have met that challenge. Vegetarian cooking is not bland, it does not taste bad, and it is not restrictive. Rather it is opening up a whole new world of ingredients I have never used before and endless possibilities with which to explore.
Give it a try. I did not use vegan cheese or mayo with this, but I had all the other ingredients and it took very little time to make. The results were delicious. You don't have to go hog wild either and go totally vegan first time out. Replace one meal with a vegetarian entree once a week to start. Before long you just may find you are feeling better about it.