It does not matter whether you like it or not, but you have to think about the way you look as much as women do. No, you do not need to put on makeup every single morning or to straighten your hair, but there are certain things that a man must do too. Just because you are a man, it does not mean that you can walk around messy and look whoever you want; there are certain things that you, as a man, must take care of.
You always have to think about your personal hygiene. Shower regularly and make sure that you always smell nice. Men who look clean and take care of themselves are always more attractive. There is nothing manly about dirty clothes and unclean nails. Yes, you have to take care of your nails too! If you are working in an office or other place where you meet a lot of people, you have to make sure that your hands are clean too. Imagine that a guy, whose hands and nails are dirty, wants to shake your hand. How would you react? You probably would not like that, would you?
Also, you have to take of your skin. Make sure that it is moisturized and that it is clean. You do not want to have pimples or any visible spots on your face, do you? Wash your face regularly and cleanse it in the mornings. Because you, unlike women, do not wear makeup every single day, so deep and long cleansing sessions are not necessary unless you want it yourself. But just include such things into your morning or evening routine.
Though men do not need to put that much work and effort into looking good as women might do, it is equally important to them too. It does not take that much time to take a shower or to polish your look. And even if you want to look a bit messy, this has to be done on purpose too!