30+ years T1. Syringes, pens, then pump.
Best thing that has ever happened to me.
Gives me much better control.
Drawbacks:
Is more time consuming initially;
Wearing a gadget;
Control of your diabetes can stil be up and down if you don't watch and monitor it
No injections;
Getting your prescriptions correct by GP initially;
DKA is likely if sets fail, or if something goes wrong as you have only a max of 5 hours insulin pumped in to you....down to you to ensure you learn what, when and why to handle instances like this;
More need for testing and certainly basal testing;
Plus:
You get used to the gadget;
If you have one with a full remote then you never really feel different when eating compared to getting an injection out;
Set failures etc aren't often and you learn whether its your body or pump causing them;
Time faffing around does get less, but it is stilll a requirement to do set changes, or tubes or cartridge or something every 2-3 days.
The pump becomes your best friend.
Fine tuning and activities etc are brilliant.