My birth mom

So my birth father... whom I have known for only about a month, finally tracked my birth mom down in Glendale, CA. We have emailed back and forth quite a bit... its been very fulfilling knowing them, what they do, their stories, etc... but a part of me cant help but be sad. It is sad bc I am just now getting to know them. I am trying to be happy and gracious, which I truly am, but a part of me is pissed. Why did it take this long... I was the innocent one in this situation.. and even thought now I feel empowered by knowing them, something is missing. Also, I  I feel like they will never get those 25 years back... and I am trying to get to know strangers.. but they gave me life. its all very confusing! Also, I have no one really to talk to about all this, at least no one who truly knows me, and I have a feeling my friends/coworkers either just dont really care or they don't get the complexity of not knowing where you came from for 25 years then all of a sudden this wealth of information and love being dropped into your lap. My adoptive family has been very cold and unsupportive... I am being a whiny baby.. just needed to vent for a moment. Lord, give me strength!! Meeting her on my 25th birthday. If u had told me this a year ago, no, 3 months ago, I wouldn't have believed you. What a true blessing its been, and I need to suck it up and be thankful.