I think one of the reasons people are more aware nowadays of the need to have a mobile phone in case of emergencies is that 25 years ago we had a public telephone available on almost every other street corner. I remember maybe 23 years ago the phone box I walked past on my way home from work having a notice that it was going to be decommissioned and thinking it was kind of sad, the end of an era. If you need to call someone now, you’ll be lucky to find a phone box let alone one with a working phone in it - lots of the red ones have been retained and repurposed as community pantries, libraries etc but very working public telephones.
I was definitely pretty reliant on my phone going everywhere with me 10 years ago. It was 9 years ago I remember it got me out of a tricky spot when I did my ‘big shop’ at the supermarket and realised I’d not put my bank card back in my purse … I didn’t have the luxury of Apple Pay (not sure if it existed, it took me a while to trust it!) but my banking app had the facility to send a code to be able to withdraw cash from my account from certain hole in the wall atms, without the card - so I was able to withdraw the required cash and still pay for my shopping.
I am completely with you on the dislike of carrying things. But I take my phone to the shops because I’d need to my card anyway, so instead I can take my phone. Not only does it contain my bank cards, but also all my store cards/ loyalty cards, store apps for places where I get vouchers for money off so saves carrying all those - in case I decide to/remember I need to go to a shop before I go back home.
I also use it a lot as a sat nav - I used to have a satnav but it stopped being supported for updates, made more sense to use my phone for that too. Sometimes I use it for longer journeys I don’t even need a map for - because it tells me about road closures and traffic delays that I wouldn’t otherwise know about.
I love photography and it’s great to have a camera with me when one is needed! In fact it’s completely negated the need to take an actual camera on all but the most special of occasions.
If I’m somewhere there’s a long queue or wait - I can play games, read a book, catch up on what my friends/family are doing, find a place to eat, book a table, manage my finances, place an online shop, make amendments to my house/car insurance.
I have also been known to sit in the car watching a movie whilst waiting for DP to finish at places when I’ve given him a lift.
Plus it’s a note book and a diary and a clock. Shopping list - check. To do list - check. Reminders - check. Looking things up to see if they’re appropriate for what I need - check.
It’s a QR code reader, a means to electronically complete forms at the dentist, a means to book a taxi (by call or app), get a bus ticket, a train ticket, a timer or stopwatch, an alarm, the weather forecast, a torch, a document scanner, dictaphone, music player, small television, web browser, access to social media, messaging device - and a phone!
Also - most public car parks are now pay by phone - ideally via app! I can think of quite a few you can’t pay other than by phone.
It’s literally 1000s of things plus an encyclopaedia of the world in a thing smaller than a clutch bag.
The only other thing I need to take out with me that it doesn’t do is replace my house and car keys - but that’s one thing I wouldn’t rely on it for because there’s always a chance I’ll run out of battery and that seems like it could be problematic.
There’s also the matter that people (eg my elderly parents) may need me! or I might need someone or something.
I think I’m perhaps more surprised you don’t lock your door though and wonder where on earth you must live! Whilst you do hear (and see) tales of opportunist thieves trying front door handles as they walk down a street, if they’ve decided to break into a property they’ll nearly always try the back first and try the door handle. And unless there’s something specific making them target that house (like they’re after car keys for the £100k car in the driveway) if it’s easy they’re in, if it’s difficult they’ll try the next one - especially in summer months when people forget to lock doors and close windows!
i might be tempted to check the terms of your rental agreement/ lease though if i were you - if I was letting a property to a tenant I wouldn’t want to think they were leaving it insecure for anyone to come in and trash…