Parents accept their undying love for my other sibling

I don’t know how to put my feelings in words here. I am not much of a writer and really don’t know how to write what i am feeling right now. Recently (2 days ago) my mum called me in the middle of night sobbing on the phone (i thought my grandma passed away) telling me how sorry she and my dad were for loving my sister more than me. Initially i thought they were playing some prank on me but later on when she went on explaining things it started hitting me that all these years what i thought was parenting was actually neglecting and anger.

She went on to tell me how her mother loved her son (mum’s younger brother) more than my mom and when my mom had me, 27 years age she couldn’t feel that love for me that she should actually have felt.Even my dad accepted it (His parents loved his elder brother more). I was beaten, yelled at ,pushed just becoz my parents couldn’t get the love they deserved. My sister who is 6 years younger than me is the apple of their eye. What ever she does is always correct. Her mistakes are dismissed whereas mine were punished (sometimes in a very harsh way)…
I still clearly remember , when i was in my 8th grade my sister once cried saying i hurt her and my parents without second thought started beating me. I was later taken for stitches on my cheek and my head coz of my wounds.
I was very bad at maths and my dad always found a way to hit me with books, sticks, punches and much more. I always thought i was a dumb kid with no brian for education but now its shows me that i was unloved.
When i asked her why come clean after 27 years all she said was she always wanted to come clean and she loved me no matter what but there was always favouritism and my sister took an upper hand.
Even after her confession i am not able to bring myself to hate them and get angry over them. All i am thinking of is that they could have behaved in a much more bad meen with me but no matter what they fed me, clothed me, educated me and protected me from every bad force of the outer world and i respect and love them for it ..
Now i am in dilemma about what should i do.SHould i forget everything and go on as nothing ever happened or stop interacting with them and start building a life for me…