Not sure why you're so insistent on this. Both running/cardio and regular weight training combined will provide the best weight loss results.
The main reason I am insistent on it is that running is free, and gyms are a rip off. the best way to get someone who is just starting out to quit is to make it seem like working out is going to end up costing them too much money.
also, while weights will certainly not hurt with weight loss as it gets you in a good routine of healthy activity, it is still not essential, especially when you are first just trying to drop unwanted weight.
Non-essential? Perhaps. Non-beneficial? Completely false.
I could just as easily claim that exercise is completely non-essential to weight loss. Just eat less.
You could, yes. However doing some form of physical exercise along with eating a healthier diet makes the whole thing much more manageable. I can either eat 1400 cals per day and lose weight, or I can eat 2000 calories, run for 30-40 mins, and lose the same or more amount of weight.
Allowing that additional intake gives you room to occasionally eat a bad meal, or to simply eat more healthy food without worrying about it.
From a weight loss perspective, having more muscle mass uses up more energy every day.
Weight training forces your body to use energy repairing muscles. Weight loss comes from both fat and muscle - weight training limits muscle decline when losing weight.
It can do, yes.
However its very easy for people starting out (and tbh even people who've been working out for years) to over estimate how many calories their body needs for muscle repair and they end up sabotaging their weight loss/maintenance.
How many people try to put on size and start downing supplements only to end up with bigger muscles but also a gut.
Comparison:
75kg person of my height/age has a calorie maintenance level of approx 2800.
Take 7kg off (vague estimate of weight i've gained from weight training over the last few years) it goes down to approx 1650.
150 calories is about 15 mins at medium pace on the bike, or jogging. Every day. Before hitting the gym or running. It would be more for bigger blokes.
I'm not sure what your point is here. Yes being heavier means you have a larger calorie intake for maintenance, I agree with that.
However a 1600 cal net calorie daily intake is hardly something difficult to maintain. I eat about 2000-2100 cals per day and burn off 600-800 on average. I'm actually going to drop that down to about 1300 cals net soon as I'm wanting to drop down below 70kg this year to improve my speed (I'm 5'11)
From a looks perspective (a likely motivating factor in a lot of weight loss), weight training will result in a better looking body, even if there is a bit of flab, and even moreso if there isnt.
Well that depends on what look you are going for really, doesn't it?
What guys think is attractive and what women actually find attractive are 2 rather different kettles of fish (check how many beefcakes have won "sexiest man alive" type awards. the answer is nil)