How better is it to get 2nd hand bike?

I'm not really a bike person. I just use it when it's necessary and opt for cycle most of the time. I'm moving to ktm for work and i can't rely on public transportation as it takes a lot more time. The motorcycle we have is my dad bought as 2nd or 3rd hand but works completely fine and he's the one who does servicing which is rarely, he got it for 50-60k it's honda. I'm not a bike person so if i shift i have to get a bike so what to consider new or old ?