Now if a 60 yr old seeks out "fresh" 18 yr olds something is wrong even if it is legal. (…) if a 50 yr old seeks out fresh 18 yr olds or younger, there is a concern.
Yes, I see your point is an ethical point vs legal.
However what it it's the 18yr who seeks the 50yr? You assume that the man is the "hunter" and the 18yr the victim. This is a cliché, just like when we say every sex worker is raped against her will because she cannot consent to this. I know many 18yo seeking mature men, you have no idea how frequent that is. Now, if it's the young woman seeking, does it make it less wrong? On what basis? I also know many 18yo who seek mature men to scam them, so the cliché of "abuser" and "abused" is quite often reversed....
My former 20yo secretary got married with her 55yo husband and she told me very bluntly (that was her style! lol!) how she sought him out, connected with him, flirted with him even if he resisted and finally how he gave in and both fell in love. It this wrong? Should I judge her? I don't think so, she was sincere. What happens between two consenting adults, whatever their age, is their business.
It may not be a choice you would make, but it was definitely her very conscious choice. I'm sure you made choices in your life that others may not make. As long as they are yours, it's your business and yours only.