I wouldn't feel guilty about not feeling the need for consumer goods. And certainly we are all about value, foregoing conspicious consumption, etc. However, the "I don't deserve this" mentality is something I'd like to delve into a little further.
I speak as a "nice guy" who subconsciously learned that my needs weren't important (due to an unhealthy upbringing), and as a result in my life/relationships I lived not making my own needs a priority. So, I ask if there's something like this at play. Do you struggle with feeling like your needs/wants/desires are important? Are you always sacrificing for others? Are you a people pleaser? I always put other people's needs/desires/wants first before mine, and as a result ended up being pretty miserable.
I've had to learn that my own needs are important, that I must seek to meet them, and that no one else will provide for them if I don't. I've had to learn how to be selfish in a healthy way. The following book was instrumental for me in working through this process:
http://www.amazon.com/No-More-Mr-Nice-Guy/dp/0762415339If you're a woman, I'm not sure what resources to point you to. Obivously the book is for "nice guys", I think you'd still find some value in it nonetheless. I also think working through this with a counselor could help as well - assuming the "I don't deserve this" is a deeper psychological issue as I'm asking.
Anyway, just a suggestion. If it helps, awesome, if I'm wrong, my bad.