Strava is a good time management guide.
Once you do a few runs in an area you know how long it will take to get from A to B and C,D,E ..
Whilst that's true, I can just as easily time a journey using the stopwatch feature on my phone, or even the really old-fashioned way by noting the time on my (analogue) watch at the start and finish of any given trip.
I've been cycling (on and off) for around 45 years, and I've never had any trouble remembering how long it takes to get to my common destinations. And now that I use (and really like) Strava, I still never need it for that purpose. For example, I'm heading out somewhere Sunday morning, and I just know it'll take me about 20 minutes to get there - I'll allow 30.You would rather use a stop watch and remember each place you ride in a given time (or log it in a spreadsheet). Just turn GPS on, press start and it does the rest for you every time you go on each particular route/segment and will show you your progress over the years. Its really good for the stats it can give you.
Personally I like Strava if you don't get caught up in the segment times. Yes it good to see how you compare but there are so many ways to cheat the system, so it has to be just for fun.
PS the Strava app on phones is way off what a real GPS device records...