Can 30 year old men still look attractive for women?

Is 30 years old still considered young or a bit old for men? Do men still look good when they're 30? About Me: I'm a 15 year old boy. I'm 15 years old and I look great. But I'm afraid that I will lose my looks at an early age. So that's why I'm wondering whether 30 year olds still have their looks. I'm only 15 and I'm already worrying about getting old. Is it normal for a 15 year old to worry about getting old?