Am I wrong to expect more of my parents?
I'm almost tempted to think this is a fake post, so outlandish is this behaviour
Of course you're not wrong to expect more! They sound like people with BIG issues of their own. Parental love is crucial to a child's development and they've starved you of that; this is child abuse and can be considered a traumatic event. It is to your credit that you have managed to be successful despite having to live with emotional deprivation.
I have never felt unconditionally loved...by anyone...ever
You mention your husband in your title but you haven't discussed him at all. There is a theory that people marry people with whom they can work out their unresolved parental issues - if your husband is indeed as unresponsive as your parents, it could be the case in your situation.
If the distress you feel is causing you significant trouble, you might wish to seek professional help. You will, unfortunately, never be able to go back and get the love you should have had, but there is a therapeutic theory around self-parenting which posits that you can do the work your parents did not to help yourself overcome their neglect. This site has some information on the idea of the 'Inner Child', though it's not a professional site.
http://www.crystalinks.com/innerchild.html
There are books about healing the 'inner child':
Self-Parenting 12 Step Workbook: Windows to Your Inner Child by Patricia O'Gorman, et al
Self-Parenting: The Complete Guide to Your Inner Conversations by John K. Pollard, Linda Nusbaum (Illustrator)
12 Steps for Adult Children by Friends in Recovery
Healing the Child Within by Charles Whitfield (Author)
Lifeskills for Adult Children by Janet Woititz (Author), Alan Garner (Author)
You still have a lot of years ahead of you and you can take some steps to banish your old demons. Best of luck!