No, they always do this.
My own father was the same, only difference is he stuck around till I was 11 - but wasn't a 'father' in any way, shape or form - and was violent and aggressive towards my mum, me and my siblings, very very useless and lazy and made little to no effort to actually be a dad. He worked and had money but he gambled most of it away and gave us the smallest percentage of money to my mum every now and again, enough to pay for food - usually whenever he wanted a decent meal. He never wanted to be a dad, it was obvious. He used to say it himself. And only left when my mum finally found the guts to throw him out. He ignored us for over 10 years but two years ago suddenly tried getting back into our life again, acting like father of the year. Acting as if he had never even left. He was full of praise and compliments, telling us he always thought of us and always loved us (but of course couldn't answer us when we said 'well how come you never called or visited or even sent a ****ing birthday card?' ) but the story is - his parents are dead, his siblings never speak to him, hes got no money to his name and recently had a heart attack as well so of course NOW he suddenly remembered that he has children and wants to be part of our life again. We all work now too and make a decent wage each, even my mum is working and we're in a much better position in life so of course he wants to come back. But we haven't let him.
Two of my friends are the same, absent father their whole life until he suddenly had a reason to come back. They ALWAY have a reason for wanting to come back and sadly the reason is never because they actually want to be part of their kids lives. People who actually want to be part of their kids lives never leave. Even if they break up, they are always around trying to see their kids. They refuse to leave. Whereas your dad and my dad willingly walked, left us, ignored us and then suddenly remembered us many years later. **** him, he didn't care about you so why should you care about him?