I also think men (in general) make a LOT less effort than women with their looks. And it seems like they don't need to/don't have to. But that's because we have been conditioned into thinking women must be looking perfect, and glamourous all the time.
No grey hairs, slim of course, perfect nails, shiny white teeth, and a skirt or dress and high heels to make her look 'feminine.' 
Men however, they can age naturally, (and get a bit fat!) and it's perfectly OK!
Even in Hollywood, (male) actors are acceptable/classed as attractive when they have wrinkles and lines, and a pot belly (dadbod anyone!) But actresses? They have to be perfect.. They have to have a totally smooth face and forehead, straight white teeth, not a single grey hair, and they must be super slim.
Check these pics out of Brad Pitt and Courteney Cox. Roughly the same age, but Brad is ageing naturally, and Courtney is botoxed and filled within an inch of her life. Without it, she would be vilified and demonised, because just how DARE any woman have the temerity to age?!!!
Even on here, you see posts time after time from women claiming people say they look 10 to 15 years younger, some even claim 20 years younger. Some say they are 42 and still get IDd for booze and cigarettes! Or that they are 39 and when they answered the door, the man at the door asked if her mommy was in. And then you get the 'how old do I look?' threads. From women desperately seeking validation of how YOUNG they look.
All these women are DESPERATE to tell people how 'young' they look, and how people think they are their daughter's sister, and other similar tales.
Society is OBSESSED with women looking younger, and looking perfect, and it pisses me off to the nth degree! I am just as bad myself! I have gained a stone since March, (and 2 stone since last October,) and feel SHIT about myself. I have been poring over photos of myself from summer 2018, when I was 2 stone lighter, and looked great in my size 12 outfit that I wore for a relative's wedding. I had a photo taken a few days ago, at the beach, and I looked fucking AWFUL! 
DIET STARTS ON MONDAY!
DH has gained nearly 2 stone since last October too.
Doesn't give a shit.
Still looks great. 