Congratulations. You made the right decision. I can totally relate to your message. It feels like you're talking about me.
A few years ago, I decided to give myself some special treat, but it took me a lot of internal debating and agony (sort of like you just did) to finally decide to buy a low-end LeMond steel bike with Sora components, which I thought was good enough for me. Then on the following year, I started buying components, etc. on ebay and started tear things apart and putting stuff together myself. Now I ride aluminum Specialized frame and did all the assembling of components that comes from all over the place, some 2nd hand, some new.
Then a bug hit me again.
For the past several weeks, I had been debating myself all over again (or I should say 10% thinking and 90% justifying). I wanted a Ti frame bike. I've done a lot of research, comparing this and that, read a lot of postings on this forum (I've learned a lot, btw). After all, I have a good job, make good $$$, have some savings. I don't smoke, I don't drink. I don't gamble, I don't have an extra marital affair. And one of my few enjoyment in life is to ride a bike (besides reading). So I decided that I deserve to have some real nice one and I'm sure I'll enjoy it for a very long time. I just ordered it less than a week ago. It hasn't arrived yet. But I'm totally satisfied with my decision.