1. You already have a life bud. The best part is that you yourself chose it.
2. You started making friends the day you jumped into this hobby. Like-minded people here. The sole reason I joined this board!
3. You've got bucketloads of confidence dude. 10 dedicated years in collecting with that level of self-control over other needs with an average salaried job - thats confidence right there, my friend!
4. Spoken like a true collector! The wants/desires are just never-ending
You are perfectly sane and insane as anyone can be! Spending on something that you can enjoy makes sense to me even though the so-called 'sane' part of the population thinks otherwise.
I don't have much in my collection but I'm slowly and gradually working to make it grow. My parents criticise me for this but whenever anyone asks about my collectibles when they visit us, my Mum and Dad proudly say that its his hobby and collection! My GF thinks otherwise though and left me as she thinks I care for my collectibles more than her even though I've always struck a balance between the two. To hell with you, witch!
So, I would say (and this has been said by others many times too) that if you really like or want something, don't let anything deterrent be in your way! Go for it! Its your money, your life, your choice. Don't let anyone else say otherwise!
I wish you full of health and that you keep adding more to your collection for many years to come!
Cheers,
Neo.