1680 red dilemma

[ars1g09]

Would love your input/vote on this.

This is my only vintage watch - a red 1680 sub. No box or papers but had a service in RSC London in 2013.

I bought this back in 2015, but what I'm finding is I don't wear it as often as my other modern pieces - I think it's cause right now I simply prefer modern pieces to vintage. As such I have started to consider selling it, but I do fear I will regret it in the long run - i.e. if I start falling in love with vintages 10 years down the line, something like this will be much harder to find.

Based on your personal experiences, would you:

1. Keep it, as perhaps tastes will change as one grows older
2. Sell it and use the fund for something that can be enjoyed now (as a side note, how do I best 'value' this if I go down this route?)

Obviously no right or wrong answer, just wanted to get everyone's opinions.

Pics below!